General:* This instruction page is NOT part of the document and must NOT be printed.
• Pages labeled with the text “THIS PAGE INTENTIONALLY BLANK” are placement pages ONLY,
and should NOT be printed.
• THIS document will most likely be a unique piece -- either a label or certificate or
other such miscellaneous format.
• EXACT specifications on the print & job specs should already be known to
you. In you are uncertain of what these specifications are, please contact
Simplicity Technical Publications.
• (Note: We will do our best to answer your questions concerning this job, but may need to transfer
you to another department within our company for additional specifications and job
requirements).
————————————————————————————————————————————–––
If you have further questions on how to utilize this file, please contact
Simplicity Technical Publications Department at (262) 284-8647.
THIS PAGE INTENTIONALLY BLANK
Repair Information
Neutral
Adjustments
For Hydrostatic Drive Tractors
Volume I
Fifth Edition (1975 – 1997 Model Year)
TP 500-1220-06-XX-SMA
Rev. 7/1999
MANUFACTURING INC.
500 N. Spring Street / PO Box 997
Port Washington, WI 53074-0997 USA
Section 1. Commercial Front-Cut Riders with Dual Eaton Model 7 Hydrostatic ................................................6
SIMPLICITYAGCO ALLISMASSEY FERGUSON
CFC Series/Procut3000 Series
1691969 - 20 HP
1691968 - 20 HP
1691967 - 18 HP
1691966 - 18 HP
1691965 - 16 HP
1691964 - 16 HP
1691846 - 20 HP
1691845 - 20 HP
1691844 - 18 HP
1691843 - 18 HP
1691842 - 16 HP
1691841 - 16 HP
1691975 - 20 HP
1691974 - 18 HP
1691973 - 16 HP
1691972 - 20 HP
1691971 - 18 HP
1691970 - 16 HP
1691882 - 16 HP
1691876 - 18 HP
Section 2. Large-Frame Tractors with Shaft Drive - Sundstrand Model 15
Hydrostatic (Peerless 2600-002 or 2600-008) ........................................................................... 11
SIMPLICITYAGCO ALLISMASSEY FERGUSON
18 & 20 GTH & SunStar Series1900 & Ultima Series2900 Series
1692521 - 18 HP
1692456 - 20 HP
1692454 - 20 HP
1692135 - 20 HP
1692133 - 20 HP
1692131 - 18 HP
1691953 - 20 HP
1691926 - 20 HP
1691924 - 18 HP
1691710 - 20 HP
1691528 - 18 HP
1691381 - 20 HP
1691380 - 18 HP
1691357 - 16 HP
1691250 - 14 HP
1691018 - 20 HP
1691017 - 18 HP
1692523 - 18HP
1692460 - 20 HP
1692458 - 20 HP
1692141 - 20 HP
1692139 - 20 HP
1692137 - 18 HP
1691955 - 20 HP
1691397 - 18 HP
1691392 - 20 HP
1691391 - 18 HP
1691389 - 16 HP
1691387 - 14 HP
1691307 - 18 HP
1691020 - 20 HP
1691019 - 18 HP
1692525 - 18 HP
1692507 - 20 HP
1692505 - 20 HP
Section 3. Large-Frame Tractors with Belt Driven - Sundstrand Model 15 Hydrostatic.................................12
SIMPLICITY
Sovereign, 17GTH-L,AGCO ALLISMASSEY FERGUSON
7000 & 7100 Series, 7790900 & 700 Series2800 Series
1692798 - 18 HP
1692796 - 18 HP
1692450 - 18 HP
1692143 - 18 HP
1691957 - 17 HP
1691717 - 17 HP
1691382 - 16 HP
1690890 - 18.5 HP
1690723 - 14 HP
1690640 - 19 HP
1690638 - 19 HP
1690572 - 17 HP
1690571 - 17 HP
1690570 - 16 HP
Section 4.
1690569 - 16 HP
1690480 - 17 HP
1690479 - 17 HP
1690478 - 16 HP
1690477 - 16 HP
1690473 - 12 HP
1690433 - 18 HP
1690431 - 18 HP
1690429 - 16 HP
1690427 - 16 HP
1690352 - 12 HP
1690342 - 16 HP
1690202 - 16 HP
1690006 - 16 HP
1692847 - 18 HP
1692845 - 18 HP
1692452 - 18 HP
1692144 - 18 HP
1691960 - 17 HP
1691718 - 17 HP
1691383 - 16 HP
1691139 - 18.5 HP
1691124 - 14 HP
1691122 - 16 HP
1690894 - 18.5 HP
1690727 - 14 HP
1690642 - 19 HP
1690575 - 16 HP
1690574 - 17 HP
1690519 - 17 HP
1690516 - 12 HP
1690367 - 18 HP
1690217 - 12 HP
1690214 - 12 HP
1690211 - 16 HP
1690076 - 12 HP
1690014 - 16 HP
This procedure applies to the
following models:
Simplicity - Regent & Coronet Series
AGCO Allis - 500 & 400 Series
Massey Ferguson - 2500 & 2400 Series
The following is a purging procedure for
products that use the Hydro-Gear transmission. Use this procedure if air has become
trapped in the transmission during shipment,
storage, or during an oil change. Purge the
transmission if it lacks drive in forward or
reverse.
1. Park the tractor on a flat, level surface.
2. Place the hydro release lever in the PUSH
position by pulling rearward on the lever . The
lever is located under the rear right-hand corner
of the frame.
3. Start the tractor engine and run at low idle.
4. Move the ground speed control lever to the
neutral gate.
5. Return the control lever to the neutral gate.
6. Place the hydro release lever (A) in the DRIVE
position by pushing the lever fully forward.
7. Drive the tractor for at least five feet in forward
and reverse directions with full throttle and full
ground speed. Repeat this procedure three times
in the forward and reverse directions.
Repeat the above steps if the tractor has noisy or
erratic operation, lack of performance after
transmission warm up, or oil leakage from
transaxle vent tube.
1692399 - 12.5 HP
1692176 - 12.5 HP
1692491 - 12.5 HP
4
Introduction
■ This manual assumes all clutch and brake adjustments have been made, and that
transmission control linkages are in good serviceable condition.
■ Worn parts, broken or weak springs, fasteners, and bushings should be replaced as
necessary before attempting to make adjustments.
■ It is possible during adjustments to place yourself in a position which is more
hazardous than when the unit is in normal operation.
■ Safety is a matter of common sense . . . a matter of thinking before acting.
■ Familiarize yourself with the product and pay special attention to all safety warnings.
■ These adjustments are meant to minimize cr eep when controls are placed in the neutral
position.
■ Hydrostatic transmissions should never be relied upon to hold a tractor in a parked
position. The parking brake should be set and engine stopped whenever leaving the
tractor.
NOTE:PUSHING THE TRACTOR BY HAND
1. Disengage the PTO and turn the engine off.
2. Move the transmission release lever to PUSH position.
The tractor can now be pushed by hand. T owing the tractor with another vehicle is not
recommended, as the transmission may be damaged.
WARNING
When making adjustment, keep hands, hair, clothing, and tools away from rotating
belts. Careless or improper attention may result in serious injury.
5
Section 1.
Commercial Front-Cut Rider with Dual Eaton Model 7 Hydrostatic
Wheel-Steer Adjustments
Neutral
1. Make sure that the steering wheel is springcentered in the straight-forward position. If
spring pulls steering wheel off-center, loosen
the nut securing the anchor bolt (G) and move
bolt in slot until wheel is pointing straight
ahead. Retighten nut and recheck steering
wheel alignment.
2. Check the alignment of the rear edges of bars
(I, figure 1-1) and transmission control shafts
(C and D). Rear edges should be aligned as
shown in figure 1-1. To adjust linkage, first loosen
jamnuts (A), remove the nut securing the ball
joint (H), and rotate ball joint until alignment is
correct. Retighten all hardware.
3. Block frame so that wheels are off the ground.
Increase the engine RPM level and move foot
pedal forward and reverse several times. Spring
tension should return foot pedal to neutral.
4. If wheels rotate in neutral, loosen nuts
(B, figure 1-1) on each side of the hydro pump
linkage (F). Turn either front or rear nut until
wheel stops rotating.
5. Tighten nuts, making sure control rods do not
change position. This may take several times to
position rods at exact neutral.
6. Remove frame blocking and test operate.
Rider should not move with foot pedal in
neutral position.
Figure 1-1.
A. Steering Linkage Adjustment Nuts
B. Neutral Adjustment Nuts
C. Left Hand Transmission Control Shaft
D. Right Hand Transmission Control Shaft
E. Steering Linkage
F. Hydro Pump Linkage
G. Spring-Centering Bolt
H. Ball Joint
I. Bar
Transmission Speed Variation
If rider pulls to one side with the steering wheel in a
straight forward position, the hydro pump linkage
can be adjusted to correct for unequal pump output.
This adjustment limits the output of a faster hydro
pump at less than maximum forward speed. Refer to
“Forward Travel Stop Adjustment” for maximum
forward speed adjustment.
To adjust hydro pump linkage (A, figure 1-2), loosen
retaining hardware and move linkage upward in slot
(B) to reduce hydro pump output. Retighten flange
locknut (C) after adjustment is complete.
Figure 1-2.
A. Hydro Pump Linkage
B. Adjustment Slot
C. Flange Locknut
6
Section 1. (Continued)
Commercial Front-Cut Rider with Dual Eaton Model 7 Hydrostatic
Ground Speed Control
The position and angle of the foot pedal (A, figure
1-3) can be adjusted by loosening taptite screw (B)
and moving pedal in slot. This adjustment should
not affect rider speed or neutral adjustment.
Figure 1-3.
A. Foot Pedal
B. Adjustment Capscrew
Lever-Steer Adjustments
Control Levers
The control levers have slotted holes for mounting
and can be positioned for the most comfortable
operating position. When in neutral, the handles
should be opposite each other.
To adjust the angle of lever, loosen capscrew
(A, figure 1-4). Adjust lever position and retighten
capscrew. Neutral gate brackets (B) must be adjusted
so that new position of lever will be aligned with
neutral gate (C) when rider is in neutral.
In the operating position, handles should have about
1/2" between them so they will not contact each
other with the weight of the operator’s hands on
handles. To adjust distance, loosen locknut and turn
adjusting bolt (D) in or out. Retighten nut after
adjustment.
After handle adjustment, check the neutral adjustment to make sure there is no creep with levers in
neutral position. Readjust spring-centered lever
position. (Refer to following adjustments.)
Figure 1-4.
A. Capscrew
B. Brackets
C. Neutral Gate
D. Adjustment Bolt
7
Section 1. (Continued)
Commercial Front-Cut Rider with Dual Eaton Model 7 Hydrostatic
Neutral
Exact neutral position of transmission control
linkage (A, figure 1-5) can be adjusted by changing
position of linkage on frame bracket (B). With
control levers in neutral position, wheels should not
turn in forward or reverse direction. To adjust
neutral:
1. Block frame up so both drive wheels are off the
ground.
2. Place weight in operator’s seat to start engine.
3. With control levers in neutral gate, start engine
and leave in fast throttle position. If either wheel
turns in forward or reverse direction, perform
steps 4 and 5.
4. Loosen capscrew (C) and nut securing transmission control linkage (A). Move linkage forward or
backwards until wheel stops moving.
5. Retighten hardware, making sure wheel does not
rotate after hardware is tightened. Repeat steps
for opposite wheel if necessary.
6. Shut engine off and remove weight from seat.
Lower rider to the ground.
Figure 1-5.
A. Transmission Control LinkageC. Capscrew
B. Frame Bracket
Spring-Centered Lever
Control levers should be adjusted so that levers
automatically return to neutral position when
released. Before performing adjustment, make sure
“Control Lever Adjustment” and “Neutral Adjustment” have been performed.
1. Block frame up so both drive wheels are off the
ground.
2. Place weight in operator’s seat to start engine. Do
not start engine.
3. Make sure that “Control Lever Adjustments” and
“Neutral Adjustment” are correct (refer to
preceding adjustments).
4. Loosen spring tension completely on friction pad
(refer to following adjustment).
5. Loosen nut (A, figure 1-6) on top of turnbuckle
(B) and adjust turnbuckle up or down.
WARNING
Do not adjust turnbuckle with engine running.
Hydro pump fan is too close to turnbuckle to
safely perform adjustment.
6. Restart engine and check control lever position.
Move control lever forward and backward and
check if lever returns to neutral position and
wheel does not rotate. If wheel rotates forward,
turnbuckle assembly must be lengthened (turnbuckle will move down). If wheels rotate backwards, turnbuckle assembly must be shortened
(turnbuckle will move up).
Figure 1-6.
A. NutD. Stationary Spring
B. TurnbuckleE. Friction Pad
C. Tension Spring
7. Repeat turnbuckle adjustment until control lever automatically returns to neutral position. Tighten nut (A)
when adjustment is correct.
8. Tighten spring tension on friction pad (refer to following
adjustment).
9. Remove weight from seat and lower rider to the ground.
8
Loading...
+ 28 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.