Page 2729 of 3051

SLC492AA
5. Apply a continuous bead of liquid gasket to mating surface of
front cover assembly.
+Use Genuine Liquid Gasket or equivalent.
6. Installation is in the reverse order of removal.
DISASSEMBLY AND ASSEMBLYNLLC0118
SLC265B
1. Oil pump cover
2. Front cover
3. Inner gear
4. Outer gear5. Regulator valve
6. Spring
7. Shim8. Plug
9. Regulator valve assembly
10. Oil strainer
INSPECTIONNLLC0119Using a feeler gauge, check the following clearances:
Standard clearance:
Unit: mm (in)
Body to outer gear radial clearance 10.114 - 0.200
(0.0045 - 0.0079)
Inner gear to outer gear tip clearance 2 Below 0.18 (0.0071)
Body to inner gear clearance 3 0.05 - 0.09 (0.0020 - 0.0035)
Body to outer gear axial clearance 4 0.05 - 0.11 (0.0020 - 0.0043)
Inner gear to brazed portion of housing clear-
ance 50.045 - 0.091
(0.0018 - 0.0036)
+If the tip clearance (2) exceeds the limit, replace gear set.
+If body to gear clearances (1, 3, 4, 5) exceed the limit,
replace front cover assembly.
ENGINE LUBRICATION SYSTEMSR
Oil Pump (Cont'd)
LC-26
Page 2730 of 3051
SLC854A
SLC049B
REGULATOR VALVE INSPECTIONNLLC01201. Visually inspect components for wear and damage.
2. Check oil pressure regulator valve sliding surface and valve
spring.
3. Coat regulator valve with engine oil. Check that it falls
smoothly into the valve hole by its own weight.
+If damaged, replace regulator valve set or oil pump assem-
bly.
SLC451A
4. Check regulator valve to oil pump cover clearance.
Clearance:
6: 0.040 - 0.097 mm (0.0016 - 0.0038 in)
+If it exceeds the limit, replace oil pump cover.
ENGINE LUBRICATION SYSTEMSR
Oil Pump (Cont'd)
LC-27
Page 2731 of 3051

NMA039
Changing Engine OilNLLC0125WARNING:
+Be careful not to burn yourself, as the engine oil is hot.
+Prolonged and repeated contact with used engine oil may
cause skin cancer; try to avoid direct skin contact with
used oil. If skin contact is made, wash thoroughly with
soap or hand cleaner as soon as possible.
1. Warm up engine, and check for oil leakage from engine com-
ponents.
2. Stop engine.
3. Remove drain plug and oil filler cap.
4. Drain oil and refill with new engine oil.
Oil grade: API SH or ACEA grade A1-98, A3-98
Viscosity: See ªRECOMMENDED FLUIDS AND
LUBRICANTSº, MA-20.
Refill oil capacity (Approximate):
Unit:!(Imp pts)
Drain and refill
With oil filter change 3.7 (6-1/2)
Without oil filter change 3.5 (6-1/8)
Dry engine (engine overhaul) 3.9 (6-7/8)
CAUTION:
+Be sure to clean drain plug and install with new washer.
Drain plug:
: 29 - 39 N´m (3.0 - 4.0 kg-m, 22 - 29 ft-lb)
+The refill oil capacity depends on oil temperature and
drain time. Use these specifications as a reference only.
Always use the dipstick to determine when the proper
amount of oil is in the engine.
NDI021
5. Start engine and check area around drain plug and oil filter oil
leakage.
6. Run engine for a few minutes, then turn it off. After several
minutes, check oil level.
NMA041
Changing Engine Oil FilterNLLC01261. Remove oil filter with Tool.
WARNING:
Be careful not to burn yourself, as the engine and the engine
oil are hot.
ENGINE LUBRICATION SYSTEMSR
Changing Engine Oil
LC-28
Page 2732 of 3051
SMA010
2. Clean the oil filter mounting surface on cylinder block. Coat the
rubber seal of the new oil filter with engine oil.
SMA229B
3. Screw in the oil filter until a slight resistance is felt, then tighten
an additional 2/3 turn.
4. Add engine oil.
+Clean excess oil from engine.
SLC972A
Oil FilterNLLC0121The oil filter is a small, full-flow cartridge type and is provided with
a relief valve.
+Use Tool KV10115801 for removing oil filter.
Oil Cooler
REMOVAL AND INSTALLATIONNLLC0123
NLC047
ENGINE LUBRICATION SYSTEMSR
Changing Engine Oil Filter (Cont'd)
LC-29
Page 2733 of 3051

1. Drain engine oil and coolant.
2. Remove oil cooler.
3. Installation is in reverse order of removal.
+Be careful not to burn yourself as engine oil is hot.
+After installation, run engine for a few minutes and check
for oil leaks.
+Do not spill coolant on drive belts.
INSPECTIONNLLC01241. Check oil cooler for cracks.
2. Check oil cooler for clogging by blowing through coolant inlet.
If necessary, replace oil cooler assembly.
Service Data and Specifications (SDS)
OIL PRESSURE CHECKNLLC0094
Engine speed
rpmApproximate discharge pressure
kPa (bar, kg/cm2, psi)
Idle speed More than 78 (0.78, 0.80, 11)
3,200 314 - 392 (3.2 - 4.0, 46 - 57)
REGULATOR VALVE INSPECTIONNLLC0096Unit: mm (in)
Regulator valve to oil pump cover clearance 0.040 - 0.097 (0.0016 - 0.0038)
OIL PUMP INSPECTIONNLLC0095Unit: mm (in)
Body to outer rotor radial clearance 0.114 - 0.200 (0.0045 - 0.0079)
Inner gear to outer gear tip clearance Below 0.18 (0.0071)
Body to inner gear clearance 0.05 - 0.09 (0.0020 - 0.0035)
Body to outer gear axial clearance 0.05 - 0.11 (0.0020 - 0.0043)
Inner gear to brazed portion of housing clearance 0.045 - 0.091 (0.0018 - 0.0036)
OIL CAPACITYNLLC0097Unit:!(Imp qt)
With oil filter change3.7 (3-1/4)
Without oil filter change3.5 (3-1/8)
Dry engine (engine overhaul)3.9 (3-3/8)
ENGINE LUBRICATION SYSTEMSR
Oil Cooler (Cont'd)
LC-30
Page 2734 of 3051

SEM164F
AEM080
Precautions
LIQUID GASKET APPLICATION PROCEDURENLLC01301. Use a scraper to remove all traces of old liquid gasket from
mating surfaces and grooves. Also, completely clean any oil
from these areas.
2. Apply a continuous bead of liquid gasket to mating surfaces.
(Use Genuine Liquid Gasket or equivalent.)
+For oil pan, be sure liquid gasket diameter is 4.0 to 5.0 mm
(0.157 to 0.197 in).
+For areas except oil pan, be sure liquid gasket diameter is 2.0
to 3.0 mm (0.079 to 0.118 in).
3. Apply liquid gasket around the inner side of bolt holes (unless
otherwise specified).
4. Assembly should be done within 5 minutes after coating.
5. Wait at least 30 minutes before refilling engine oil and engine
coolant.
Preparation
SPECIAL SERVICE TOOLNLLC0131The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
Tool nameDescription
EG17650301
Radiator cap tester
adapter
NT564
Adapting radiator cap tester to radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
ENGINE COOLING SYSTEMSR
Precautions
LC-31
Page 2735 of 3051
Cooling CircuitNLLC0132
NLC087
System CheckNLLC0133WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could occur from high pressure coolant escaping from
the radiator.
Wrap a thick cloth around the cap. Slowly turn it a quarter turn
to allow built-up pressure to escape. Carefully remove the cap
by turning it all the way.
CHECKING COOLING SYSTEM HOSESNLLC0133S01Check hoses for the following:
+Improper attachment
+Leaks
+Cracks
+Damage
+Chafing
+Deterioration
SLC546AA
CHECKING COOLING SYSTEM FOR LEAKSNLLC0133S02To check for leakage, apply pressure to the cooling system with a
tester.
Testing pressure:
157 kPa (1.6 kg/cm
2, 23 psi)
CAUTION:
Higher pressure than specified may cause radiator damage.
ENGINE COOLING SYSTEMSR
Cooling Circuit
LC-32
Page 2736 of 3051

CHECKING RADIATORNLLC0133S03Check radiator for mud or clogging. If necessary, clean radiator as
follows.
+Be careful not to bend or damage the radiator fins.
+When radiator is cleaned without removal, remove all sur-
rounding parts such as cooling fan, rediator shroud and horns.
Then tape the harness and connectors to prevent water from
entering.
1. Apply water by hose to the back side of the radiator core ver-
tically download.
2. Apply water again to all radiator core surfaces once per
minute.
3. Stop washing if any stains no longer flow out from the radia-
tor.
4. Blow air into the back side of radiator core vertically download.
+Use compressesd air lower than 490 kPa (5 kg/cm
2, 71 psi)
and keep distance more than 30 cm (11.8 in).
5. Blow air again into all the radiator core surfaces once per
minute until no water sprays out.
SLC613-A
CHECKING RADIATOR CAPNLLC0133S04To check radiator cap, apply pressure to cap with a tester.
Radiator cap relief pressure:
Standard
78 - 98 kPa (0.8 - 1.0 kg/cm
2, 11 - 14 psi)
Limit
59 - 98 kPa (0.6 - 1.0 kg/cm
2,9-14psi)
SMA967B
Pull the negative pressure valve to open it.
Check that it closes completely when released.
SLC266B
Water Pump
REMOVAL AND INSTALLATIONNLLC01271. Drain coolant from radiator.
2. Remove cylinder block drain plug located at left front of cylin-
der block and drain coolant.
3. Remove front RH wheel and engine side cover.
4. Remove drive belts. Refer to EM-86, ªChecking Drive Beltsº.
5. Remove RH engine mounting. Refer to EM-131, ªENGINE
REMOVALº.
ENGINE COOLING SYSTEMSR
System Check (Cont'd)
LC-33