Graco HIGH-FLO 243737, Instructions Manual, Page: 17 / 40

309136 17
Service
To Remove the Motor (See Fig. 8)
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 13.
1. Relieve the pressure.
2. Disconnect all hoses from the pump and motor.
3. Unscrew the coupling nut (106), holding your hand
around the nut and shaft to catch the two couplers
(105) as you lower the nut (106).
4. Remove the tie rod locknuts (104) and lift the
motor off the pump.
To Reattach the Motor (See Fig. 8)
CAUTION
On stainless steel pumps, be sure to lubricate the
threads of the tie rods and apply PTFE tape to the
bottom threads of the rods before reattaching the air
motor. The bottom threads are farthest from the tie
rod flats.
1. Position the air motor on the pump. On stainless
steel pumps, lubricate and tape the tie rod threads
(see the CAUTION above). Screw the tie rod
locknuts (104) onto the tie rods (103).
2. Place the two couplers (105) in the coupling nut
(106). Screw the nut up onto the motor shaft.
Torque to 195–210 N
S
m (145–155 ft-lb).
CAUTION
Torque the coupling nut (106) to 195–210 N
S
m
(145–155 ft-lb). Do not exceed this torque specifica-
tion, to prevent damage to the piston shaft (29).
3. Reconnect all hoses. Reconnect the ground wire if
it was disconnected.
Fig. 8
01412
7, 8
4
12
105
D
104
106
1
1
1 Torque to 195–210 N
S
m (145–155 ft-lb).
5
103
2
Apply PTFE tape or auto–seize lubricant
to bottom threads .
2
29