Removing/Re-Installing The Premier Pump From The Ram - Graco 918316 Instructions-Parts List Manual

Removing/Re-installing the Premier Pump
from the Ram
75
76
8326B
Fig. 8
Removing the Pump Assembly
To remove the pump assembly from the ram, follow
this procedure:
1. If the material drum has already been removed
from the supply unit, go to step 2. If you need to
remove the material drum, , observe the cautions
and warnings, then follow steps 1 through 4 of the
procedure for Changing Empty Drums on
page 14.
2. Make sure the ram hand valve is in the OFF
position.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure (page 13).
22 310524
Service
72
73
74
71
3. Relieve the supply unit pressure.
4. Bleed off pressure in the system and excess
material by opening the dispense gun and catching
the material in a waste container.
5. Disconnect all material hoses.
6. Remove the nuts and washers (72, 73) from the
lower tie rods (71). See Fig. 8.
7. Remove the coupling nut (74), which attaches the
pump to the air motor. Be careful not to lose the
collar couplings.
8. Remove the nuts (76) from the tie rods (75). You
can now separate the pump from the air motor.
9. Raise the ram so that the air motor assembly is
clear of the lower pump assembly.
10. Remove the pump and service it as needed. To
remove the follower from the pump, go to the sec-
tion, Removing the Follower from the Pump
below.
Re-attaching the Pump Assembly to the Air Motor
Reverse the above procedure to re-attach the pump
assembly to the air motor.
Be sure that when you reinsert the collar couplings into
the coupling nut (74), the large flanges point upwards.
1. Torque the nuts (72) to 129–142 N.m
(95–105 ft-lbs).
2. Torque the coupling nut (74) to 312–340 N.m
(230–250 ft-lbs).
3. Make sure the tie rod nuts (76) are torqued to
312–340 N.m (230–250 ft-lbs).
Removing the Follower from the Pump
To remove the follower from the pump assembly:
1. Remove the pump assembly by following the
Removing the Pump Assembly procedure.
2. Remove the air line from the blow-off valve.
3. Remove the screws and washers from the follower
adapter.
4. Slide off the follower.