Isuzu 4ja1, Workshop Manual

Page: 133 / 564

ENGINE MECHANICAL 6A – 111
4. Align the idler gear setting mark with the crankshaft
timing gear (1) setting mark.
5. Align the idler gear setting mark with the camshaft
timing gear (2) setting mark.
6. Install the thrust collar and bolts to the cylinder body
through the shaft.
The thrust collar oil hole must be facing up, and the
thrust collar chamfered must be outward.
7. Tighten the idler gear bolt to the specified torque.
Idler Gear "A" Bolt Torque N·m(kg·m/lbft)
30 (3.1/22)
020R300006
22. Idler Gear "B" and Shaft
1. Apply engine oil to the idler gear and the idler gear shaft.
2. Align the idler gear "B" (3) setting mark with the idler
gear "A" (4) setting mark.
3. Tighten the idler gear bolt to the specified torque.
4. Be sure to remove the lock bolt (5) from idle gear “B”.
Idler Gear "B" Bolt Torque N·m(kg·m/lbft)
76 (7.7/56)
020L200019
5. If the idle gear "B" is disassembled, reassemble in the
following procedure.
1) Drive pins into the main gear, the front gear, and the
rear gear.
020L200007
2) Install the main gear bearing from the front side of
the main gear (the side with the groove).
3) Place the main gear in a vise with copper plate so
that the rear side of the main gear facing up.
020RY00036