Mile SZ 2498, SZ 2600 Service Manual

Mahindra institute of learning
excellence, Nasik
SZ 2498 ENGINE
ABBREVATION USED
SZ 2498 Plus : Timing - Chain Drive
SZ : Scorpio Zip 2498 : CC of engine TCI : Turbo charged intercool
The SZ 2498 TCI engine is a 4-cylinder, in-
line, overhead valve, water-cooled, direct
injection engine.
Specification-SZ 2498
No. of cylinders :04 Bore :94mm Stroke :90mm Displacement : 2498cc Compression ratio : 18.5 : 1 Power : 105 HP at 3800 RPM Torque : 238 Nm at 1700 to 1900 RPM Type of operation : Four stroke , Direct injection Timing mechanism : Chain drive [ Plus] Cooling System : Pressurised
Centrifugal water pump
Lubrication System : Force feed lubrication
Maintenance schedule
Change engine oil & filter [ Maximile Premium oil -10K ]
OR Viscosity index 15W 40. If API CG4 grade oil then.
5000km ,10000km & then every 10,000km
Refill fresh coolant [ Maximile Coolant ]
Once in a year / After every 40,000 kms
Change primary fuel filter
10000km, 20000kms & then every 10000kms
Change secondary fuel filter
20000km, 40000kms & then every 20000kms
Remove drain plug & Clean fuel tank
After every 80,000Kms
Check & drain water from filter
Every 10,000 Kms
Adjust fan belt tension as per value
During PDI & every service
Clean air filter
Every 10000Kms / Service indicator shows red band
Change air cleaner cartridge
At every 40,000kms / Service indicator shows red band even after cleaning
Adjust tappet
5000Km[ If required ], 20000 Km & then every 20000Km
Check vacuum pipe, PCVS pipe, Oil hoses & LDA connection
PDI & then every 10,000 Km
Check Radiator coolant hose connection, Heater connection
PDI & then every 5000km.
Engine oil
Alternate oil : Oil confirming to API CG4 grade with Viscosity
index 15W 40. If API CF4 grade oil used then oil change interval is after Every 5000Kms.
Maximile Coolant should be used for SZ 2600/ SZ 2600 Plus engine.
Engine Coolant
Note: No alternate coolant is available in the market. Used of any other coolant may deteriorate liner ‘O’ rings which may lead to coolant & oil mixing. This coolant is premixed with water. Total coolant capacity is 9.3 lit..
RTV silicon sealant-Rhodoseal to be used
: Between ladder frame & block. : Between Rear oil seal retainer & block.
All other places
: use Loctite 547
Rust cleaning solution [ For Turbo charger mounting Nut, EGR pipe Nut etc.]
: WD 40
Sealant
General construction
All engine internal parts remain same as SZ 2600 except crankshaft, connecting rod, FIP & nozzles
Mahindra institute of learning
excellence, Nasik
SZ 2600 ENGINE
ABBREVATION USED
SZ 2600 Plus : Timing - Chain Drive
SZ : Scorpio Zip 2600 : CC of engine TCI : Turbo charged intercool
The model SZ 2600 TCI engine is a 4-cylinder, in-line,
overhead valve, water-cooled, direct injection engine.
Specification-SZ 2600/SZ 2600 Plus
No. of cylinders :04 Bore :94mm Stroke :94mm Displacement : 2609 cc Compression ratio : 18.5 : 1 Type of operation : Four stroke , Direct injection Power : 109bhp @ 3800rpm Max Torque : 26.00 Kg-m Timing mechanism : Chain drive [ Plus] Cooling System : Pressurised
Centrifugal water pump
Lubrication System : Force feed lubrication
Maintenance schedule
Change engine oil & filter [ Maximile Premium oil -10K ]
5000km ,10000km & then every 10,000km
Refill fresh coolant [ Maximile Coolant ]
Once in a year / After every 40,000 kms
Change primary fuel filter
10000km, 20000kms & then every 10000kms
Change secondary fuel filter
20000km, 40000kms & then every 20000kms
Remove drain plug & Clean fuel tank
After every 80,000Kms
Check & drain water from filter
Every 10,000 Kms
Adjust fan belt tension as per value
During PDI & every service
Clean air filter
Every 10000Kms / Service indicator shows red band
Change air cleaner cartridge
At every 40,000kms / Service indicator shows red band even after cleaning
Adjust tappet
5000Km[ If required ], 20000 Km & then every 20000Km
Check vacuum pipe, PCVS pipe, Oil hoses & LDA connection
PDI & then every 10,000 Km
Check Radiator coolant hose connection, Heater connection
PDI & then every 5000km.
Maximile premium [10k] oil should be used for SZ 2600/ SZ 2600 Plus engine.
Engine oil
Alternate oil : Oil confirming to API CG4 grade with Viscosity
index 15W 40. If API CF4 grade oil used then oil change interval is after Every 5000Kms.
Maximile Coolant should be used for SZ 2600/ SZ 2600 Plus engine.
Engine Coolant
Note: No alternate coolant is available in the market. Used of any other coolant may deteriorate liner ‘O’ rings which may lead to coolant & oil mixing. This coolant is premixed with water. Total coolant capacity is 9.3 lit..
RTV silicon sealant-Rhodoseal to be used
: Between ladder frame & block. : Between Rear oil seal retainer & block.
All other places
: use Loctite 547
Rust cleaning solution [ For Turbo charger mounting Nut, EGR pipe Nut etc.]
: WD 40
Sealant
GENERAL CONSTRUCTION
Block
Replaceable wet type liner , Inline cylinder arrangement
Chain Drive [ Orange colour]
Cylinder head
Height of cylinder head : 97.70mm to 98.30mm
Min. cylinder head height: 97.40mm
97.70 - 98.30 mm
Cylinder head Gasket
Type : Multilayer steel gasket
Gives uniform sealing on surface area.
Note : Do not use any oil or shellac on the cylinder head gasket or on block surface or on cylinder head surface.Do not reused the gasket even if it appears to be good.
Head gasket position : Assemble gasket with lettering facing
upward.
Cylinder block warpage
Standard limit : 0.07mm Service limit : 0.10mm max.
Cylinder head warpage
Standard limit : 0.05mm Service limit : 0.10mm max.
Ladder frame
Support block from bottom side.
Act as a barrier between rotating crankshaft & returning oil to
control oil mist formation.
Reduces engine noise & vibration.
Piston
Piston : Re-entrant bowl type Max weight difference allowed : +/- 5 gms
Piston pin
Type : Full floating. Surface hardened & ground
Diameter : 32.00 mm
Weight gradingDiameter grading
Piston rings
Top : Keystoned shaped. [ Top mark ] Middle : Oil Scrapper ring - Taper faced [ Top mark ] Bottom : Conformable type oil ring
Piston rings
Ring gap [ Standard ]
Top : 0.35 to 0.55mm
( 14 to 22 Thou)
Middle : 0.80 to 1.05mm
( 32 to 42 Thou)
Bottom : 0.25 to 0.55mm
( 10 to 22 Thou)
Ring gap [ Service limit ]
Top : 0.90mm ( 36 Thou ) Middle : 1.50mm ( 60 Thou ) Botom : 0.90mm ( 36 Thou )
Note : While fitting the piston rings ensure that the
ring end gap are straggered in 180
0
Piston ring to piston groove clearance
Standard limit Service limit
Top : 0.11 to 0.15mm 0.25mm Middle : 0.05 to 0.09mm 0.15mm Botom : 0.04 to 0.07mm 0.15mm
Liner
Liner : Replaceable wet type liner.
Coolant & oil jacket are separated by ‘O’ rings. Both ‘O’ rings are same . Viton base rubber is used.
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