When performed on a regular basis, lubricating the parts of your vehicle is the least costly way
of obtaining safe and reliable vehicle operation. Added benefits and savings occur when you
check that theengine, undercarriage, andnoise emission controlparts are ingood working order
during lubrication.
This maintenance manual explains when you should lubricate parts and what to look for when
checking for wear or damage. For daily and weekly checks, refer to the vehicle driver’s manual.
IMPORTANT:Descriptions and specificationsin this manual were in effectat the time of
printing. Sterling Truck Corporation reserves the right to discontinue models and to
change specifications or design at any time without notice and without incurring
obligation. Descriptions and specifications contained in this publication provide no
warranty, expressed or implied, and are subject to revision and editions without notice.
For additional information, please contact Freightliner LLC, Service Systems and Documentation, P.O. Box 3849, Portland, OR 97208-3849, U.S.A. or refer to www.Freightliner.com and
www.SterlingTrucks.com.
Environmental Concerns and Recommendations
Whenever you seeinstructions in this manual todiscard materials, youshould attempt to reclaim
and recycle them. To preserve our environment, follow appropriate environmental rules and
regulations when disposing of materials.
NOTICE: Parts Replacement Considerations
Do not replace suspension, axle, or steering parts (such as springs, wheels, hubs, and steering
gears) with used parts. Used parts may have been subjected to collisions or improper use and
have undetected structural damage.
All rights reserved. No partof this publication, in whole or inpart, may be translated, reproduced,
stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical,
photocopying, recording, or otherwise, without the prior written permission of Freightliner LLC.
Freightliner LLC
Service Systems and Documentation (POC-SSD)
P.O. Box 3849
Portland, OR 97208–3849
Introduction
Descriptions of Service Publications
Freightliner LLC distributes the following major service publications.
Workshop ManualWorkshop manuals contain service and repair information for all vehicle sys-
tems and components, except for major components such as engines, transmissions, and rear axles. Each workshop manual section is divided into subjects
that can include general information, principles of operation, removal, disassembly, assembly, installation, specifications, and troubleshooting.
Maintenance ManualMaintenance manuals contain routine maintenance procedures and intervals for
vehicle components and systems. They have information such as lubrication
procedures and tables, fluid replacement procedures, fluid capacities, specifications, procedures for adjustments and for checking the tightness of fasteners.
Maintenance manuals do not contain detailed repair or service information.
Driver’s ManualDriver’s manuals contain information needed to enhance the driver’s under-
standing of how to operate and care for the vehicle and its components. Each
manual contains a chapter that covers pretrip inspection and daily maintenance
of vehicle components. Driver’s manuals do not contain detailed repair or service information.
Parts Technical ManualFreightliner LLC publishes this manual to aid in the identification of serviceable
replacement vehicle parts. This manual is used in conjunction with the parts
book and the service parts catalog microfiche.
Service BulletinsService bulletins provide the latest service tips, field repairs, product improve-
ments, and related information. Some service bulletins are updates to information in the workshop manual. These bulletins take precedence over workshop
manual information, until the latter is updated; at that time, the bulletin is usually
canceled. The service bulletins manual is available only to dealers. When doing
service work on a vehicle system or part, check for a valid service bulletin for
the latest information on the subject.
IMPORTANT: Before using a particular service bulletin, check the current
service bulletin validity list to be sure the bulletin is valid.
Recall BulletinsThese bulletins pertain to special situations that involve service work or replace-
ment of parts in connection with a recall notice. Recall bulletins pertain to matters of vehicle safety. All bulletins are distributed to dealers; customers receive
notices that apply to their vehicles.
Field Service
Modifications
This publication is concerned with non-safety-related service work or replacement of parts. All field service modifications are distributed to dealers; customers receive notices that apply to their vehicles.
Acterra Maintenance Manual, January 2003I–1
Introduction
For a page example of the printed manual, see Fig. 1.
A
BC
Page Description
Frame and Fifth Wheel
31−01 Frame Fastener Torque
Checking
CAUTION:
31−02 Fifth Wheel Inspecting and
Lubricating
31
HOLLAND
FONTANE
Acterra Trucks Maintenance Manual, April 2000
D
02/11/2002
31/1
E
f020103
A. Maintenance Operation Number consists of the Group Number followed by the Sequence Number
B. Group Title
C. Group Number
D. Release Date
E. Group Number/Page Number
Fig. 1, Page Example of the Printed Manual
I–2Acterra Maintenance Manual, January 2003
Maintenance Manual Contents
Group No.Group Title
00...................... General Information
01................................ Engine
09.............................. AirIntake
13......................... AirCompressor
15................... Alternators and Starters
20................... Engine Cooling/Radiator
25................................ Clutch
26........................... Transmission
31............. Frame and Frame Components
32............................ Suspension
33............................. Front Axle
35 ............................. Rear Axle
40........................ Wheels and Tires
41.............................. Driveline
42................................ Brakes
46............................... Steering
47 ................................. Fuel
49............................... Exhaust
54.......... Electrical, Instruments, and Controls
Verification of Inspections Log.........................................................00–02
Acterra Maintenance Manual, January 2007
General Information00
Noise Emission Control Systems Maintenance: 00–01
General Information
Federal Law, Part 205:
Transportation Equipment Noise
Emission Controls
Part 205, Transportation Equipment Noise Emission
Controls, requires the vehicle manufacturer to furnish, with each new vehicle, such written instructions
for the proper maintenance, use, and repair of the
vehicle by the ultimate purchaser to provide reasonable assurance of the elimination or minimization of
noise emission degradation throughout the life of the
vehicle. In compliance with the law, the Noise Emission Control Systems maintenance located in each
applicable group within this manual, in conjunction
with the vehicle workshop manual, provides these
instructions to owners.
Normal Vehicle Use
The maintenance instructions contained in this
manual are based on average vehicle use and normal operating conditions. Unusual vehicle operating
conditions may require service at more frequent intervals.
Recommendations for
Replacement Parts
Replacement parts used for maintenance or for the
repair of noise emission control systems should be
genuine Sterling parts. If other than genuine Sterling
parts are used for replacements or for the repair of
components affecting noise emission control, the
owner should be sure that such parts are warranted
by their manufacturer to be equivalent to genuine
Sterling parts in performance and durability.
Sterling Noise Emissions
Warranty
Tampering With the Noise
Control System Is Prohibited
Federal law prohibits the following acts or the causing thereof: (1) the removal or rendering inoperative
by any person other than for purposes of maintenance, repair, or replacement, of any device or element of design incorporated into any new vehicle for
the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use, or
(2) the use of the vehicle after such device or element of design has been removed or rendered inoperative by any person. Among those acts presumed
to constitute tampering are the acts listed below:
A. Removal of engine noise-deadening panels.
B. Removal of or rendering the engine speed gover-
nor inoperative so as to allow engine speed to
exceed manufacturer’s specifications.
C. Removal of or rendering inoperative the fan
clutch, including by-passing the control on any
thermostatic fan drive to cause it to operate con-
tinuously.
D. Removal of the fan shroud.
E. Removal of or rendering inoperative exhaust sys-
tem components, including exhaust pipe clamp-
ing.
F.Removal of air intake system components.
G. Removal of hood liners (noise-deadening pan-
els).
Maintenance Instructions
Scheduled intervals are in the maintenance tables in
Group 00 of this manual. A "Verification of Inspections Log" is contained in the following table, and
should be filled in each time the noise emission controls on the vehicle are maintained or repaired.
See the vehicle owner’s warranty information book
for warranty information concerning noise emission
control systems.
Acterra Maintenance Manual, January 200700/1
General Information00
Verification of Inspections Log: 00–02
Verification of Inspections Log
Verification of Inspections Log — Group 20
Verification of Inspections Log — Group 20 — Engine Cooling/Radiator
DateMileageRepair DescriptionCostRepair Facility
Verification of Inspections Log — Group 49
Verification of Inspections Log — Group 49 — Exhaust
DateMileageRepair DescriptionCostRepair Facility
Acterra Maintenance Manual, January 200700/2
General Information00
Torque Specifications Tables: 00–03
Torque Values for U.S. Customary Thread Fasteners With Lubricated*or Plated Threads
Threads may have residual oil, but will be dry to the touch.
†
Male and female threads (bolt and nut) must both be unlubricated and unplated; if either is plated or lubricated, use Table 1. Sterling recommends that all
plated and unplated fasteners be coated with oil before installation.
Table 2, Torque Values for U.S. Customary Thread Fasteners With Dry (Unlubricated) Plain (Unplated) Threads
f230009
Acterra Maintenance Manual, January 200700/4
General Information00
Torque Specifications Tables: 00–03
Torque Values for Metric Thread Fasteners With Lubricated*or Plated Threads
Thread
Diameter–Pitch
Class 8.8 BoltClass 8 NutClass 10.9 BoltClass 10 Nut
Torque: lbf·ft (N·m)Torque: lbf·ft (N·m)
8.8
f230010
8
f230011
10.9
f230012
10
f230013
M65 (7)7 (9)
M812 (16)17 (23)
M8 x 113 (18)18 (24)
M1024 (33)34 (46)
M10 x 1.2527 (37)38 (52)
M1242 (57)60 (81)
M12 x 1.543 (58)62 (84)
M1466 (89)95 (129)
M14 x 1.572 (98)103 (140)
M16103 (140)148 (201)
M16 x 1.5110 (149)157 (213)
M18147 (199)203 (275)
M18 x 1.5165 (224)229 (310)
M20208 (282)288 (390)
M20 x 1.5213 (313)320 (434)
M22283 (384)392 (531)
M22 x 1.5315 (427)431 (584)
M24360 (488)498 (675)
M24 x 2392 (531)542 (735)
M27527 (715)729 (988)
M27 x 2569 (771)788 (1068)
M30715 (969)990 (1342)
M30 x 2792 (1074)1096 (1486)
*
Sterling recommends that all plated and unplated fasteners be coated with oil before installation.
†
Use these torque values if either the bolt or nut is lubricated or plated (zinc-phosphate conversion-coated,
cadmium-plated, or waxed).
Table 3, Torque Values for Metric Thread Fasteners With Lubricated or Plated
inches of mercury (inHg)3.37685kilo Pascals (kPa)0.29613inches of mercury (inHg)
pounds per square inch (psi) 6.895kilo Pascals (kPa)0.14503pounds per square inch (psi)
Schedule I (severe service) applies to vehicles that
annually travel up to 6000 miles (10 000 kilometers)
or
that operate under severe conditions. Examples of
Schedule I usage include: operation on extremely
poor roads or where there is heavy dust accumulation; constant exposure to extreme hot, cold, salt-air,
or other extreme climates; frequent short-distance
travel; construction-site operation; city operation (fire
truck, garbage truck); or farm operation.
Schedule II (short-haul transport) applies to vehicles
up to
that annually travel
meters) and operate under normal conditions. Examples of Schedule II usage are: operation primarily
in cities and densely populated areas; local transport
with infrequent freeway travel; or high percentage of
stop-and-go travel.
Schedule III (long-haul transport) is for vehicles that
annually travel
meters), with minimal city or stop-and-go operation.
Examples of Schedule III usage are: regional delivery
that is mostly freeway miles; interstate transport; or
any road operation with high annual mileage.
The table under Maintenance Schedule Table
shows three different schedules of vehicle usage. For
each schedule the appropriate distance interval is
given for performing Initial Maintenance and for repeating each maintenance operation set (M1 through
M5). For Schedule I, the appropriate time interval is
also given.
The tables under Maintenance Interval Tables show
which maintenance operation set must be performed
at the actual distances (miles and kilometers) for
each maintenance schedule (or the actual hours of
operation for Schedule I). The schedule of actual distances (and hours) is based on the intervals given in
the Maintenance Schedule Table.
The tables under Maintenance Operation Sets
Tables list, in numerical order, the text reference
numbers and descriptions of
tions, and indicates all maintenance operation sets at
which each operation must be performed.
Each Maintenance Interval Operations Table (IM
through M5) lists the appropriate text reference
numbers and descriptions of only those maintenance
operations that must be performed at that maintenance operation set. Each maintenance operation set
is listed in a separate Maintenance Operations Table.
more than
60,000 miles (100 000 kilo-
60,000 miles (100 000 kilo-
all
maintenance opera-
Use
Before placing your new vehicle in service, determine
the correct maintenance intervals that apply to your
intended use of the vehicle. Refer to the Maintenance Schedule Table to determine the distance (or
hour) interval at which each Maintenance Operation
Set must be performed to comply with your vehicle’s
schedule. For Schedule I vehicles equipped with an
hourmeter, use hours to determine maintenance intervals, rather than distance traveled.
When the vehicle reaches the actual distance (or
hours) given for an interval, refer to the Maintenance
Interval Tables to find the Maintenance Operation Set
that applies to that interval. Then perform the maintenance operations listed in the applicable Maintenance Interval Operation Table. Use the maintenance
operation reference numbers to find instructions in
the manualfor completion of each operation.
Complete each Maintenance Operation Set at the
required interval. Then, when you have completed
Maintenance Operation Set M5 under the 32nd Maintenance Number listed in the Maintenance Interval
Table, repeat the pattern. The 33rd Maintenance
Number will begin at Maintenance Operation Set M1,
under the 1st Maintenance Number listed in the
Maintenance Interval Table.
NOTE: When performing operations for the 33rd
Maintenance Number, complete the M1 operations only, not the Initial Maintenance operations.
To determine the distance/hours for the 33rd Maintenance Number, add your schedule’s distance/hours
for the 1st Maintenance Number to the
distance/hours for the 32nd Maintenance Number,
then perform the operations listed in the applicable
table in the Maintenance Operations Tables. For the
34th Maintenance Number, add the distance/hours
for the 2nd to the distance/hours for the 32nd; continue this pattern for each successive Maintenance
Number.
Acterra Maintenance Manual, January 200700/7
Maintenance Schedule Table: 00–06
General Information00
Maintenance ScheduleModels
Schedule I
(Severe Service)
vehicles that annually travel up
to 6000 miles (10 000 km)
Schedule II
(Short-Haul Transport)
vehicles that annually travel up
to 60,000 miles (100 000 km)
Schedule III
(Long-Haul Transport)
vehicles that annually travel
over 60,000 miles (100 000
Maintenance Intervals for Schedules II and III (all models)
Maint.
No.
1IM and M1800012 00010,00016 000
2M1 and M216,00024 00020,00032 000
3M124,00036 00030,00048 000
4M1, M2, and M332,00048 00040,00064 000
5M140,00060 00050,00080 000
6M1 and M248,00072 00060,00096 000
7M156,00084 00070,000112 000
8M1, M2, M3, and M464,00096 00080,000128 000
9M172,000108 00090,000144 000
10M1 and M280,000120 000100,000160 000
11M188,000132 000110,000176 000
12M1, M2, and M396,000144 000120,000192 000
13M1104,000156 000130,000208 000
14M1, and M2112,000168 000140,000224 000
15M1120,000180 000150,000240 000
16M1, M2, M3, M4, and M5128,000192 000160,000256 000
17M1136,000204 000170,000272 000
18M1 and M2144,000216 000180,000288 000
19M1152,000228 000190,000304 000
20M1, M2, and M3160,000240 000200,000320 000
21M1168,000252 000210,000336 000
22M1 and M2176,000264 000220,000352 000
23M1184,000276 000230,000368 000
24M1, M2, M3, and M4192,000288 000240,000384 000
25M1200,000300 000250,000400 000
26M1 and M2208,000312 000260,000416 000
27M1216,000324 000270,000432 000
28M1, M2, and M3224,000336,000280,000448 000
29M1232,000348 000290,000464 000
30M1 and M2240,000360 000300,000480 000
31M1248,000372 000310,000496 000
32M1, M2, M3, M4, and M5256,000384 000320,000512 000
Maintenance Interval
Table 8, Maintenance Intervals for Schedules II and III (all models)
Schedule IISchedule III
MileskmMileskm
Acterra Maintenance Manual, January 200700/10
General Information00
Maintenance Operation Sets Tables: 00–08
IMPORTANT: At each Maintenance Operation Set, in
addition to the maintenance operations listed in this
table, perform all daily, weekly, and monthly maintenance operations listed in the "Pretrip and Post-trip
Inspections and Maintenance" chapter of the
Acterra®Driver’s Manual
Maintenance Operation Number and Operation Description
00–15Lubrication and Fluid Level Check••••••
00–16Lubrication and Fluid Level Check••••
01–01Engine-Support Fasteners Checking••
01–02Engine Drive Belt Inspecting•••
01–03Pacbrake Inspecting and Maintenance
09–01Air Cleaner Element Inspecting and Replacing•••
13–01Air Compressor Inspecting, Bendix•••
13–02Air Compressor Rebuilding/Replacing, Bendix•
15–01Alternator, Battery, and Starter Checking••
20–01Radiator Cap Checking••••
20–02Radiator Pressure Flushing and Coolant Changing••
20–03
25–01Clutch Release Bearing and Release Cross-Shaft Lubricating••••••
25–02Clutch (Pull-Type) Inspecting and Adjusting••••
25–03Hydraulic Fluid Level Checking•••••
25–04Hydraulic Fluid Replacing•
26–01Manual Transmission Fluid Level Checking•••
26–02Eaton Fuller and TTC Transmission Fluid Changing and Magnetic Plug Cleaning•
26–03Allison, Eaton Fuller, and Meritor Transmission Breather Checking••••
26–04Allison Transmission Fluid and Filter Changing•••
26–05Mercedes-Benz Transmission Fluid Changing and Magnetic Plug Cleaning•
26–06Mercedes-Benz Transmission Leak Checking•
31–01Frame Fastener Torque Checking•••
31–02Fifth Wheel Inspecting••••••
31–03Fifth Wheel Lubricating••••••
32–01Suspension Inspecting••••••
32–02Suspension Lubricating••••••
Fan Clutch Checking
.
Maintenance Operation Sets for Groups 00 through 32
NOTE: Maintenance operations appearing in italics in
this table are for noise emission control components.
Numbers in this table are maintenance operation reference numbers matching those in the text of this
manual.
•••
••••
†
••
Acterra Maintenance Manual, January 200700/11
General Information00
Maintenance Operation Sets Tables: 00–08
Maintenance Operation Sets for Groups 00 through 32
Maintenance Operation Number and Operation Description
32–03U-Bolt Torque Checking••••
*
With frequent use, the Pacbrake Exhaust Brake will operate free of maintenance. However, if the vehicle is used inconsistently, seasonally, or is exposed to
excess moisture, it will be necessary to perform preventative maintenance as instructed in Maintenance Operation 01–03.
†
IM interval does not apply to vehicles with a factory fill of Eaton approved synthetic lubricant.
Table 9, Maintenance Operation Sets for Groups 00 through 32
Maintenance Operation Sets for Groups 33 through 42
Maintenance Operation Number and Operation Description
46–01Steering Driveline Lubricating••••
46–02Drag Link Lubricating••••••
46–03Power Steering Reservoir Fluid Level Checking••••
46–04Power Steering Reservoir Fluid and Filter Changing••
46–05Power Steering Gear Lubricating••••••
47–01Fuel Tank Draining and Vent Checking•••
49–01
54–01Electrical System Checking•••
54–02Coolant Level Sensor Cleaning•
72–01Weatherstrip, Door Latch, and Door Hinge Lubricating••••••
83–01Air Conditioner Inspecting••••••
83–02HVACAir Filter Replacing
*
Replace the HVAC filter every 6 months regardless of mileage.
Exhaust System Inspecting
Table 11, Maintenance Operation Sets for Groups 46 through 83
••••
*
Acterra Maintenance Manual, January 200700/13
Initial Maintenance (IM) Operations Table: 00–09
General Information00
IMPORTANT: After performing all operations in this
table, perform all daily and weekly maintenance operations listed in the "Pretrip Inspection and Daily
Maintenance" chapter of the vehicle driver’s manual.
Also, perform all M1 Maintenance Interval Operations
at the Initial Maintenance (IM).
Initial Maintenance (IM) Operations
Maint.
Oper. No.
00–10Perform All M1 Operations
25–02Clutch (Pull-Type) Inspecting and Adjusting
26–02Eaton Fuller and TTC Transmission Fluid Changing and Magnetic Plug
31–01Frame Fastener Torque Checking
32–03U-Bolt Torque Checking
33–04All-Axle Alignment Checking
33–07Draw Key Nut Inspecting
35–03Axle Lubricant Changing and Magnetic Plug Cleaning
35–04Two-Speed-Axle Shift Unit Oil Level Checking
*
IM interval does not apply to vehicles with a factory fill of Eaton approved synthetic lubricant.
Cleaning
*
Initial Maintenance (IM) Operations
NOTE: Numbers in this table are maintenance operation reference numbers matching those in the text of
this manual. The Initial Maintenance consists of all
M1 Operations plus the other operations listed below.
Acterra Maintenance Manual, January 200700/14
General Information00
M1 Maintenance Interval Operations Table: 00–10
IMPORTANT: After performing all operations listed in
this table, perform all daily, weekly, and monthly
maintenance operations listed in the "Pretrip and
Post-Trip Inspections and Maintenance" chapter of
IMPORTANT: After performing all operations listed in
this table, perform all daily, weekly, and monthly
maintenance operations listed in the "Pretrip and
Post-Trip Inspections and Maintenance" chapter of
Acterra®Driver’s Manual
the
. Also, perform all M1
Maintenance Interval Operations at the M2 Maintenance Interval.
M2 Maintenance Interval Operations
Maint.
Oper. No.
00–10Perform All M1 Operations
00–16Lubrication and Fluid Level Check:
• Two-Speed-Axle Shift Unit Oil Level Checking
• Camshaft Bracket Bushing Lubricating
• Air Reservoir Automatic Drain Valve Disassembly, Cleaning, Inspect-
13–01Air Compressor Inspecting, Bendix
20–01Radiator Cap Checking
20–03
26–03Allison, Eaton/Fuller, and Meritor Transmission Breather Checking
42–11Automatic Slack Adjuster Inspecting, Meritor
49–01
83–02HVAC Air Filter Replacing
*
Replace the HVAC filter every 6 months regardless of mileage.
Fan Clutch Checking
Exhaust System Inspecting
M2 Maintenance Interval Operations
*
NOTE: Maintenance operations appearing in italics in
this table are for noise emission control components.
Numbers in this table are maintenance operation reference numbers matching those in the text of this
manual. The M2 Maintenance consists of all M1 Interval Operations plus the other operations listed
below.
Acterra Maintenance Manual, January 200700/17
M3 Maintenance Interval Operations Table: 00–12
General Information00
IMPORTANT: After performing all operations listed in
this table, perform all daily, weekly, and monthly
maintenance operations listed in the "Pretrip and
Post-Trip Inspections and Maintenance" chapter of
Acterra®Driver’s Manual
the
. Also, perform all M1
and M2 Maintenance Interval Operations at the M3
Maintenance Interval.
M3 Maintenance Interval Operations
Maint.
Oper. No.
00–10Perform All M1 Operations
00–11Perform All M2 Operations
01–02Engine Drive Belt Inspecting
09–01Air Cleaner Element Inspecting and Replacing
25–02Clutch (Pull-Type) Inspecting and Adjusting
26–04Allison Transmission Fluid and Filter Changing
32–03U-Bolt Torque Checking
33–06All-Wheel-Drive Front Axle Oil Changing
33–07Draw Key Nut Inspecting
35–05Two-Speed-Axle Shift Unit Oil Changing
40–01Wheel Nut Checking
42–12Air Dryer Checking, Bendix AD–9
47–01Fuel Tank Draining and Vent Checking
54–01Electrical System Checking
M3 Maintenance Interval Operations
NOTE: Numbers in this table are maintenance operation reference numbers matching those in the text of
this manual. The M3 Maintenance consists of all M1
and M2 Interval Operations plus the other operations
listed below.
Acterra Maintenance Manual, January 200700/18
General Information00
M4 Maintenance Interval Operations Table: 00–13
IMPORTANT: After performing all operations listed in
this table, perform all daily, weekly, and monthly
maintenance operations listed in the "Pretrip and
Post-Trip Inspections and Maintenance" chapter of
Acterra®Driver’s Manual
the
. Also, perform all M1,
M2, and M3 Maintenance Interval Operations at the
M4 Maintenance Interval.
M4 Maintenance Interval Operations
Maint.
Oper. No.
00–10Perform All M1 Operations
00–11Perform All M2 Operations
00–12Perform All M3 Operations
01–01Engine-Support Fasteners Checking
15–01Alternator, Battery, and Starter Checking
20–02Radiator Pressure Flushing and Coolant Changing
26–02Eaton Fuller and TTC Transmission Fluid Changing and Magnetic Plug
Cleaning
31–01Frame Fastener Torque Checking
33–04All-Axle Alignment Checking
35–03Axle Lubricant Changing and Magnetic Plug Cleaning
46–04Power Steering Reservoir Fluid and Filter Changing
M4 Maintenance Interval Operations
NOTE: Maintenance operations appearing in italics in
this table are for noise emission control components.
Numbers in this table are maintenance operation reference numbers matching those in the text of this
manual. The M4 Maintenance consists of all M1, M2,
and M3 Interval Operations plus the other operations
listed below.
Acterra Maintenance Manual, January 200700/19
M5 Maintenance Interval Operations Table: 00–14
General Information00
IMPORTANT: After performing all operations listed in
this table, perform all daily, weekly, and monthly
maintenance operations listed in the "Pretrip and
Post-Trip Inspections and Maintenance" chapter of
Acterra®Driver’s Manual
the
. Also, perform all M1,
M2, M3, and M4 Maintenance Interval Operations at
the M5 Maintenance Interval.
M5 Maintenance Interval Operations
Maint.
Oper. No.
00–10Perform All M1 Operations
00–11Perform All M2 Operations
00–12Perform All M3 Operations
00–13Perform All M4 Operations
13–02Air Compressor Rebuilding/Replacing, Bendix
25–04Hydraulic Fluid Replacing
26–05Mercedes-Benz Transmission Fluid Changing and Magnetic Plug Cleaning
26–06Mercedes-Benz Transmission Leak Checking
42–13Air Dryer Desiccant Replacing, Bendix AD–9
42–16Air Brake Valve Disassembly, Cleaning, and Inspecting, Bendix E–8P,
R–12, R–14, SR–1, ST–3, TC–6, and TP–3DC
54–02Coolant Level Sensor Cleaning
M5 Maintenance Interval Operations
NOTE: Numbers in this table are maintenance operation reference numbers matching those in the text of
this manual. The M5 Maintenance consists of all M1,
M2, M3, and M4 Interval Operations plus the other
operations listed below.
Acterra Maintenance Manual, January 200700/20
General Information00
Lubrication and Fluid Level Check (M1): 00–15
Maintenance Operation 00–15 (see Table 12), sum-
marizes all Lubrication and Fluid Level Check operations that must be performed at the M1 Maintenance
Interval for Schedules I, II, and III
Maintenance operation numbers given in the table
are reference numbers used to help you find detailed
instructions in the manual on the lubrication or fluid
check.
Acterra Maintenance Manual, January 200700/21
Lubrication and Fluid Level Check (M2): 00–16
General Information00
Maintenance Operation 00–16 (see Table 13), sum-
marizes all Lubrication and Fluid Level Check operations that must be performed at the M2 Maintenance
Interval for Schedules I, II, and III
Maintenance operation numbers given in the table
are reference numbers used to help you find detailed
instructions in the manual on the lubrication or fluid
check.
Acterra Maintenance Manual, January 200700/22
Engine01
Index, Alphabetical
Title of Maintenance Operation (MOP)MOP Number
Engine Drive Belt Inspecting..........................................................01–02
Pacbrake Inspecting and Maintenance .................................................. 01–03
Acterra Maintenance Manual, January 2007
Engine01
01–01 Engine-Support
Fasteners Checking
Front and rear engine supports for vehicles built from
January 2007 require no periodic maintenance.
Mounts should be inspected when the engine is removed for service. For vehicles manufactured prior to
January 2007, perform the following check.
Check the rear engine-support fasteners (see Fig. 1,
Ref. 4) for tightness. Tighten the 3/4-inch fasteners
215 to 265 lbf·ft (292 to 359 N·m).
Check the front engine-support fasteners for tightness. Tighten the 5/8-inch fasteners 125 lbf·ft (170
N·m).
NOTE: At engine overhaul, and whenever the
engine has been removed, inspect the lower
and upper isolators (Refs. 1 and 6), and replace
them if they are worn. See Group 01 of the
Acterra®Workshop Manual
2
6
5
10/05/94
1. Lower Isolator
2. Engine Support
Washer
3. 3/4–10 Capscrew
4
Fig. 1, Engine Rear Mount
for instructions.
1
2
3
f220047a
4. 3/4–10 Hexnut
5. Engine Mount
6. Upper Isolator
01–02 Engine Drive Belt
Inspecting
Worn or loose drive belts may cause premature
bearing failure or engine overheating. Excessive tension, or too little tension on the belt may result in ex-
cessive and premature belt wear. Poly-V belts, or
serpentine belts, are retained by a belt tensioner that
requires no tension adjustment. Replace the engine
drive belt if any conditions described in the visual
description are found. V-belts are installed as individual belts, and as matched sets. When replacing a
matched set of belts, always replace both belts at the
same time. Matched belts must be from the same
manufacturer. To inspect a belt, gently twist the belt
to view the belt sidewalls and bottom. Inspect all
drive belts for the following conditions, then perform
the belt tension inspection.
Belt Condition Inspection
1. Inspect the belt for glazing. See Fig. 2, Ref. A.
Glazing is represented by shiny sidewalls, and is
caused by friction created when a loose belt slips
in the pulleys. It can also be caused by oil or
grease contamination on the pulleys.
2. Check the belt for ply separation. See Fig. 2,
Ref. B. Oil, grease, or belt dressing can cause
the belt to fall apart in layers. Repair any oil or
coolant leaks that are affecting the belts before
replacing the drive belts. Do not use belt dressing on any belt.
3. Check the belt for a jagged or streaked sidewall.
See Fig. 2, Ref. C. Jagged or streaked sidewalls
are the result of foreign objects, such as sand or
gravel in the pulley, or a rough pulley surface.
4. Check for tensile breaks (breaks in the cord
body). See Fig. 2, Ref. D. Cuts in a belt are usually caused by foreign objects in the pulley, or by
prying or forcing the belt during removal or installation.
5. Check for uneven ribs on serpentine (poly-V)
belts. See Fig. 2, Ref. E. Foreign objects in the
pulley will erode the undercord ribs, causing the
belt to lose its gripping power.
6. Check the drive belts for cracks. See Fig. 2, Ref.
F. Small irregular cracks are usually the signs of
an old belt.
7. Inspect the pulleys for excessive play or wobble.
Excessive play or wobble indicates a failure of
the pulley bearing. Check for belt squealing or
squeaking. Replace the bearings as necessary.
NOTE: If it is difficult to distinguish the location
of a supposed bearing noise, obtain a stethoscope and place it on the component being
Acterra Maintenance Manual, January 200701/1
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