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SECTION
4
- DISASSEMBLY AND REASSEMBLY
4.4 FUEL INJECTION VALVES AND FUEL INJECTION
PUMPS
4-4-07
- Remove the roller pin
⑯
, and roller
⑦
.
- Measure the inner diameter of the roller, the outer diameter of the pin, and
the inner and outer diameters of the roller bushing
⑰
. Refer to the maximum
wear limits shown in Section 3.2 and replace any parts that exceed
the clearance limits. If pitting or chipping is apparent on the roller wear
surface, install a new roller.
- When the roller guide assembly is reassembled, recheck the dimension 'A' as
shown in Figure. It should be the same as the original measurement (plus
0.0, minus 0.1 mm) to insure that pump timing is not changed. If the
measurement differs from the original (because of new parts installation),
the shim thickness should be changed as required to maintain the original
dimension.
Plunger Barrel Assembly
- With the plunger, the roller follower assembly, and the delivery valve
assembly removed, next remove the control rack
⑤
and the control sleeve
⑥
.
Remove the deflectors
⑬
and the locating screw
⑲
. The plunger
barrel
②
can now be removed and inspected.
- An adjusting mark is stamped on the plunger and barrel assembly to indicate
the start of injection. If new parts are installed, review.
- When reassembling the plunger assembly, install new o-rings
⑳
and .
Install the control sleeve
⑥
and rack
⑤
, mating the end tooth of the
sleeve to the end tooth of the rack, as shown.
21
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