Timing Gear And Camshaft - wsm wg972-e4 Workshop Manual

WG972-E4, WSM

(3) Timing Gear and Camshaft

Push Rod Alignment
1. Place the push rod on V blocks.
2. Measure the push rod alignment.
3. If the measurement exceeds the allowable limit, replace the
push rod.
Push rod alignment Allowable limit
Oil Clearance between Tappet and Tappet Guide Bore
1. Measure the tappet O.D. with an outside micrometer.
2. Measure the I.D. of the tappet guide bore with a cylinder gauge,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit or the tappet is
damaged, replace the tappet.
Factory specification
Oil clearance between
tappet and tappet guide
bore
Allowable limit
Tappet O.D. Factory specification
Tappet guide bore I.D. Factory specification
Timing Gear Backlash
1. Set a dial indicator (lever type) with its tip on the gear tooth.
2. Move the gear to measure the backlash, holding its mating gear.
3. If the backlash exceeds the allowable limit, check the oil
clearance of the shafts and the gear.
4. If the oil clearance is proper, replace the gear.
Factory specification
Backlash between idle
gear and crank gear
Allowable limit
Factory specification
Backlash between idle
gear and cam gear
Allowable limit
Factory specification
Backlash between oil
pump drive gear and
crank gear
Allowable limit
1-S46
ENGINE
0.25 mm
0.0098 in.
9Y1211108ENS0075US0
0.016 to 0.052 mm
0.00063 to 0.0020 in.
0.10 mm
0.0039 in.
17.966 to 17.984 mm
0.70733 to 0.70803 in.
18.000 to 18.018 mm
0.70867 to 0.70937 in.
9Y1211108ENS0076US0
0.0430 to 0.124 mm
0.00170 to 0.00488 in.
0.15 mm
0.0059 in.
0.0470 to 0.123 mm
0.00185 to 0.00484 in.
0.15 mm
0.0059 in.
0.0410 to 0.123 mm
0.00162 to 0.00484 in.
0.15 mm
0.0059 in.
9Y1211108ENS0077US0
KiSC issued 07, 2015 A