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Graco LineLazer IV 3900 Series - Pinion Assembly and Clutch Service

Graco LineLazer IV 3900 Series
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311020 13
Pinion Assembly/Clutch Armature/Clamp
Pinion Assembly/Clutch Ar mature Removal
Pinion Assembly
If pinion assembly (25) is not removed from clutch
housing (85), do 1. through 3. Otherwise, start at 4.
1. Remove drive housing, page 12.
2. Fig. 12. Remove clip (251) and junction box (226).
3. Fig. 11. Disconnect pump stroke sensor and clutch
cables.
4. Fig. 4. Remove four screws (189) and lockwash-
ers (188) and pinion assembly (25).
ti5480b
189
188
189
188
Fig. 4
25
5. Fig. 5. Place pinion assembly (25) on bench with
rotor side up.
6. Remove four screws (170) and lockwashers (172).
Install two screws in threaded holes (E) in rotor.
Alternately tighten screws until rotor comes off.
Fig. 5
E
ti5481b
175
172
ti5987c
E
7. Fig. 6. Remove retaining ring (25e).
8. Tap pinion shaft (25d) out with plastic mallet.
ti5482b
Fig. 6
25e
25d
8703A
86
25c
Clutch Armature
9. Fig.7. Use an impact wrench or wedge something
between armature (87) and clutch housing to hold
engine shaft during removal.
10. Remove four screws (175) and lockwashers (172).
11. Remove armature (87).
Fig. 7
175
172
87
8704A

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