Graco 249570 A, Instructions-Parts List Manual

Page: 44 / 68

Repair
44 311075ZAB
Drive Housing
Removal
1. See Before Beginning Repair , page 36.
1. Relieve the pressure. Follow the Pressure Relief
Procedure , page 22.
2. Remove the screws (207) and end covers (221,
227), F
IG
. 16, page 45.
NOTE: Examine the connecting rod (216). If the rod
needs replacing, first remove the pump (219). See
Displacement Pump , page 38
3. Disconnect the pump inlet and outlet lines. Remove
the screws (220) and pull the drive housing (215) off
of the motor (201) The connecting rod (216) will
disengage from the crankshaft (210).
4. Examine the crankshaft (210), gear reducer (214),
thrust washers (208, 212), and bearings (209, 211,
213).
Installation
1. Apply grease liberally to the washers (208, 212),
bearings (209, 211, 213), gear reducer (214),
crankshaft (210), and inside the drive housing (215).
Grease is supplied with the replacement parts kits.
NOTE: The B side crankshaft (210) includes the cycle
counter magnet (224). When reassembling, be sure to
install crankshaft with magnet on the B side.
If replacing the crankshaft, remove the magnet (224).
Reinstall the magnet in the center of the offset shaft on
the new crankshaft. Position the shaft in Park position.
2. Install the bronze bearings (211, 213) in the drive
housing (215), as shown.
3. Install the bronze bearings (209, 211) and steel
washer (208) on the crankshaft (210). Install the
bronze bearing (213) and steel washer (212) on the
gear reducer (214).
4. Install the gear reducer (214) and crankshaft (210)
into the motor end bell (MB).
NOTE: The crankshaft (210) must be in line with the
crankshaft at other end of the motor. The pumps will
move up and down together.
NOTE: If the connecting rod (216) or pump (219) were
removed, reassemble the rod in the housing and install
the pump. See
Displacement Pump , page 38.
5. Push the drive housing (215) onto the motor (201).
Install the screws (220).
6. Install the drive housing covers (221 on A side, 227
on B side) and the screws (207). The pumps must
be in phase (both at same position in stroke).
NOTICE
Do not drop the gear reducer (214) and crankshaft
(210) when removing the drive housing (215). These
parts may stay engaged in the motor end bell (MB) or
may pull away with the drive housing. Dropping the
gear reducer and crankshaft can damage or break
teeth on the gear. Damaged teeth can cause further
damage to the gear and to the mating components.
The performance of the system could be diminished or
the system could function improperly.