Gorman-Rupp Pumps PAV3B60C-3TNV70 1433753 and up - Manual (Page 33)

OM-06260 PA SERIES
MAINTENANCE & REPAIR PAGE E - 15
Removing Air Compressor Assembly
(Figure 2)
Further pump disassembly requires removal of the
air compressor assembly (26). Disengage the
hardware (12 and 31) and remove the guard (28).
Remove the hardware (12 and 29) and use a pry
bar to raise the air compressor high enough to re­
move the spacers (38). Remove the belt (27) from
the air compressor drive pulley (18, Figure 3).
Disengage the hardware (32 and 33) and remove
the U‐bolt (30).
Disconnect all hoses and fittings from the air com­
pressor and use a suitable hoist and sling to re­
move the air compressor assembly.
Separating Pump and Drive Assembly From
Engine
(Figures 2 and 3)
The pump and drive assembly must be separated
from the engine before further disassembly of the
rotating assembly.
Support the rotating assembly using a hoist and
sling.
See Figure 2 and remove the hardware (9 and 24)
securing the mounting flange (25) to the engine
bellhousing. Separate the rotating assembly from
the coupling (43) by pulling the rotating assembly
straight away from the engine. The inner hub of the
coupling will remain on the shaft. Loosen the set­
screw in the hub and remove the hub and coupling
key (46).
If the coupling requires replacement, disengage
the hardware (44 and 45) securing the flexible por­
tion of the coupling to the engine flywheel.
Remove the air compressor drive belt (27). Loosen
the setscrews in the bushing (48) and slide the
sprocket (47), bushing and key (49) off the shaft.
Move the rotating assembly to a clean, well
equipped shop area for further disassembly.
Shaft and Bearing Removal and Disassembly
(Figure 4)
When the pump is properly operated and main­
tained, the bearing housing should not require dis­
assembly. Disassemble the shaft and bearings
only when there is evidence of wear or damage.
Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly
equipped shop by qualified personnel.
Remove the bearing housing drain plug (17) and
drain the lubricant. Clean and reinstall the drain
plug.
Disengage the hardware (9 and 24) and remove
the mounting flange (25), gasket (26) and oil seal
(7). Press the oil seal from the mounting flange.
Disengage the hardware (8 and 9) and pull the lip
seal holder (10) out of the bearing housing (13).
Remove the O‐rings (11 and 12) from the shoul­
ders on the seal holder. Pry or press the oil seals
(7A and 7B) from the seal holder.
Place a block of wood against the impeller end of
the shaft (29) and tap the shaft and assembled
bearings (28 and 31) from the bearing housing.
After removing the shaft and bearings, clean and
inspect the bearings in place as follows.
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place. It is
strongly recommended that the bearings
be replaced any time the shaft and bear­
ings are removed.
Clean the bearing housing, shaft and all compo­
nent parts (except the bearings) with a soft cloth
soaked in cleaning solvent. Inspect the parts for
wear or damage and replace as necessary.