Graco LineLazer IV 3900 - Drive Housing; Removal; Installation

Drive Housing
12 311020Y
Drive Housing
Removal
1 Relieve pressure, page 7.
2 Fig. 3. Remove bearing housing. Refer to Bearing
Housing and Connecting Rod procedure on page
11.
3 Remove two screws (158) and reed switch (182).
4 Remove six screws (189) and reed switch (25).
5 Lightly tap around drive housing (24) to loosen drive
housing. Pull drive housing straight off pinion
housing. Be prepared to support gear cluster (23),
which may also come out.
Installation
1 Liberally apply bearing grease (supplied with
replacement gear cluster) to gear cluster (23) and to
areas called out by reference 2 in Fig. 3.
2 Place bronze colored washer (24g) on shaft
protruding from large shaft of drive housing (24).
Place silver colored washer (24h) on pinion
housing. Clean mating surfaces of pinion and drive
housings. Align gears and push new drive housing
straight onto pinion housing and locating pins (A).
3 Install six screws (189). Torque evenly, referencing
note 1 value in Fig. 3.
4 Install reed switch (182) with two screws (158).
5 Install bearing housings. Do steps 1 through 6 of
Bearing Housing and Connecting Rod
procedures on page 11.
ti6396a
25
189
A
178
23
179
24h
24g
178
24
173
189
182
158
181
Fig. 3
LineLazer IV 3900/R300: Torque to 200 in-lb (22.6 N·m)
LineLazer IV 5900: Torque to 25 ft-lb (34 N·m)
Apply remaining grease to these areas
1
2
1
2
2
1