Graco 235345, Instructions-Parts List Manual

Page: 11 / 30

Service
307158ZAP 11
Reassembly (Refer to Fig. 4)
NOTE : Model 217022 uses one seal (23) and a backup
seal (23a).
1. Lubricate the seal(s) (23) with hydraulic oil. Install them
in the lower housing (41) with the lips facing up toward
the top of the motor.
2. For Models 217022 and 217338, install the o-ring (12*)
onto the adapter (14). Install the adapter (14) into the
lower housing (41), making sure it seats properly. For
Model 235345, install the o-ring (12) onto the lower
housing (41).
3. Place the piston flats in a vise. Install the spring (55)
inside the piston (49a). The compression rings (19)
must be positioned with the joints about 180°
opposed. Be sure the o-ring (26) is in place on Model
235345.
4. Install the piston stop (33) and locknut (9) on the trip
rod. Torque the nut to 117--123 in-lb (13.2--13.9 N.m).
Slide the trip rod (36) into the piston (49a). Apply
thread sealant to the retainer (49b) threads. With the
piston flats in a vise, tighten retainer (49b) until it is
slightly below the retaining ring groove. Install
retaining ring (49c). This is important to prevent the
retainer from backing out during operation and
damaging the motor.
F
IG
. 4 ___________________________________________
NOTE : Graco recommends replacing piston (49a), retainer
(49b), and retaining ring (49c) together in kits appropriate
to motor configurations. See pages 14, 22, 24, or 26
depending on motor model. Retainer(49b) can be used on
old pistons without retaining groove, but must be threaded
in completely.
NOTE : For Models 235345, 262818, and 24W139, set
base (2) on workbench during reassembly. For Models
217022 and 217338, place adapter (14) in vise jaws and
lower housing (41) on top of jaws.
5. Install the o-ring (13) onto the cylinder (39). Install the
cylinder (39) into the lower housing (41).
6. Install the trip rod and piston into the cylinder (39) and
lower housing (41) so the piston is recessed at least 1
inch (25 mm) from the top of the cylinder.
7. If the bearing and guide (51) was removed, install it on
the upper housing (40) with the three screws (24)
(apply thread sealant).
8. Hold the flats of the trip rod with an adjustable wrench
and install the upper housing (40). The trip rod will
protrude from the top.
9. Slide the lower trip rod guide (34) and spring (38) onto
the trip rod. Install the spool (37) with the detent at the
top. Install the top spring (38) and guide (34) on the
trip rod. Install the top hex nut (20). Torque the nut to
82--88 in-lb (9.3--9.9 N.m).
10. Remove the adjustable wrench. Seat the upper
housing (40) onto the cylinder (39), so the tube fittings
align with those on the lower housing.
Reinstall the hydraulic tube (48) and loosely tighten
the compression nuts. See the Parts Drawing for your
motor.
11. Replace the o-ring (11) on the stop plug (43). Seat the
plug into the upper housing (40).
12. Install the end cap (44), using thread sealant on the
socket screws (8).
13. Lubricate the threads of the tie rods (35) and install
them with lockwashers (1). If the crown nuts (22) were
removed, reinstall them and torque them onto the
rods to 70--80 ft-lb (95--108 N.m).
14. For Models 217022, 217338, 262818, and 24W139,
take the motor out of the vise jaws and lay it on its
side. Install the lower plate (10).
NOTE : For Model 217022, align the point of adapter plate
(10) in the same direction as the fluid tube (16).
15. For Models 217022, 217338 and 262818, apply thread
sealant to the lower threads of the tie rods (35) and
torque the tie rod nuts (3) to 70--80 ft-lb (95--108
N.m).
For Model 235345 and 24W139, torque tie rods into
base, apply thread sealant, then torque the tie rod
nuts (3) to 70--80 ft-lb (95--108 N.m).
16. With the motor on its side, install one detent
assembly: the ball (7), guide (27) with the concave
surface toward the ball, spring (29), o-ring (25*) and
retaining plug (28). Torque the plug to 152--158 in-lb
(17.2--17.9 N.m). Repeat for the other side of the
motor.
17. For Model 235345, slide the drip cover (31) onto the
piston (49a) up to the o-ring (30). Install screw (42) into
the piston. Attach the drip pan (26) to the base using
screws (21).
49b
49a
49b
49a
49c
New Piston Old Piston