Nissan Terrano r20e. Manual — part 310
RESURFACING OF CRANKSHAFT JOURNAL AND
CRANK PIN
When using undersize main bearings and connecting rod bearings,
the crankshaft journals or crank pins must be finished to match the
bearings.
R: Crank journal 3.0 mm (0.118 in)
Crank pin 3.5 mm (0.138 in)
CAUTION:
I
At the same time make sure that the surface width does not
increase.
I
Do not attempt to cut counterweight of crankshaft.
PILOT BUSHING REPLACEMENT
1. Pull out bushing with Tool.
2. Insert pilot bushing until distance between flange end and
bushing is specified value.
Distance:
Approx. 5.6 - 6.0 mm (0.220 - 0.236 in)
FLYWHEEL RUNOUT
Runout (Total Indicator Reading):
Less than 0.15 mm (0.0059 in)
FRONT PLATE
Check front plate for warpage. If not within the limit, make flat or
replace front plate.
Warpage limit:
0.2 mm (0.008 in)
SEF692A
SEM413
NEM181
SEM059A
SEM668B
ENGINE OVERHAUL
TD27Ti
Inspection (Cont’d)
EM-131
GEAR TRAIN
Camshaft drive gear, injection pump drive gear, oil pump gear,
idler gear, crankshaft gear and vacuum pump gear.
1. If gear tooth and key have scratches or are excessively worn,
replace gear and key.
2. Check gear train backlash before disassembling and after
assembling.
Method A (Using dial gauge)
Method B (Using fuse wire)
If beyond the limit, replace gear.
Backlash:
Standard
0.07 - 0.11 mm (0.0028 - 0.0043 in)
Limit
0.20 mm (0.0079 in)
IDLER GEAR BUSHING CLEARANCE
1. Measure idler gear shaft outer diameter.
2. Measure idler gear bushing inner diameter.
3. Calculate idler gear bushing clearance.
Bushing oil clearance:
Standard
0.025 - 0.061 mm (0.0010 - 0.0024 in)
Limit
0.20 mm (0.0079 in)
IDLER GEAR END PLAY
Measure idler gear end play between gear plate and gear.
Idler gear end play:
Standard
0.03 - 0.14 mm (0.0012 - 0.0055 in)
Limit
Less than 0.3 mm (0.012 in)
NEM186
NEM187
SEM666B
SEM705
ENGINE OVERHAUL
TD27Ti
Inspection (Cont’d)
EM-132
REPLACEMENT OF IDLER GEAR BUSHING
1. Use a suitable tool to replace bushing.
2. Ream idler gear bushing.
Finished size:
42.00 - 42.02 mm (1.6535 - 1.6543 in)
Idler gear shaft
Install idler gear shaft so that oil hole of shaft faces upward.
CAMSHAFT AND CAMSHAFT BUSHING
Camshaft bushing clearance
Measure inside diameter of camshaft bushing (A) and outside
diameter of camshaft journal (B) with a suitable gauge.
Clearance between camshaft and bushing (A − B):
Standard
0.020 - 0.109 mm
(0.0008 - 0.0043 in)
Limit
Less than 0.15 mm (0.0059 in)
REPLACING CAMSHAFT BUSHING
1. Remove welch plug.
Using Tool, remove camshaft bushings from the cylinder block.
Some bushings must be broken in order to remove.
2. Using Tool, install camshaft bushings as follows:
(1) Install camshaft bushings in the order of “rear”, “4th”, “3rd”,
“2nd” and “front”. All bushings must be installed from the front.
(2) Face the cutout upward and toward the front of the engine dur-
ing installation.
SEM706
SEM669B
NEM171
SEM993B
SEM686B
ENGINE OVERHAUL
TD27Ti
Inspection (Cont’d)
EM-133
(3) Rear camshaft bushing.
Align the cutout of rear bushing with knock pin of replacer bar
before installation.
Insert rear bushing with replacer bar into the cylinder block.
Install guide plate with bolt holes (on the “TD” mark side) fac-
ing upper side of cylinder block. Tighten bolts.
Drive replacer bar until the alignment mark on replacer bar is
aligned with the end of replacer guide.
Remove replacer set.
After installation, check that oil hole in camshaft bushing are
aligned with oil hole in cylinder block.
SEM995B
SEM110C
NEM172
ENGINE OVERHAUL
TD27Ti
Inspection (Cont’d)
EM-134
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст