Graco Inc. Series B - Manual (Page 14)

14 307741
Service
Reassembly
1. Clean all parts thoroughly and inspect for wear or
damage. Replace parts as necessary.
NOTE: Refer to Fig. 6 for steps 2 to 5.
2. Turn the base (47) upside down. If the bearing (70)
was removed, press-fit the new bearing so its top
edge is flush with the shoulder (S) of the packing
cavity. After installation, measure the inner diame-
ter of the bearing. It must be uniformly 35 mm
(1.375 in.) to ensure that the piston shaft does not
bind. If incorrect, size the bearing while in place;
this can be done with a 35 mm (1.375 in.) diameter
steel ball.
3. Grease the wiper seal (44*) and press-fit in the
base (47).
4. Turn the base upright. Install the backup washer
(45*) in the base (47). Grease the v-block packing
(46*) and install it in the base so the lips face up.
5. Place the o-ring (41) onto the air motor base (47).
Place the gasket (35*) on the base so one of its
notches (K) aligns with the optional fluid outlet (L).
07421A
Fig. 6
1
3
4
2
46*
45*
44*
70
35*
Inner diameter of the bearing must be uniformly 35 mm (1.375 in.).
Grease.
Lips of packing must face up.
Align notch (K) in gasket (35) with the optional fluid outlet (L) in the base (47).
47
L
K
4
4
3
1
2
S
41
2