6. Maintenance
18
Read the instructions carefully. The items refer to the parts list and service kits section.
6.4 Inspection and Service of Components
Drawing 1
Stator
Inspect all the openings through the Stator (9) to be sure that they are clear and free of debris.
Drawing 4, 5
Base Assembly
Inspect the Output Pinion (11) and Idler Gears (16) for worn, damaged, or sharp/pointed teeth.
Check for signs of scoring and wear on the Idler Shafts (15).
Examine the Idler Gear Bushings (32) on the Idler Gears and the Idler Shaft Bushing (33) on the Base for signs of wear. The
inside diameter of the (32) should not exceed
6.6 mm/
0.260"
. This can be measured with a plug gauge or a letter size G drill
bit. The inside diameter of the (33) should not exceed
6.5 mm/ 0.
255”
. If Bushings need to be replaced remove them with a
small slotted screwdriver or razor blade, then tap replacements into place. Make sure the underside of the bearing’s flange is
flush with the metal.
Drawing 8
Stem Collar
Inspect the Small and Large Stem Collar O-rings, (56) and (57), for deterioration (hardening or deformation) or damage and
replace if necessary.
Drawing 20-32
Planetary Gear Train Assembly
General Disassembly and Inspection
Turn to (drawing 20): Unscrew the Nut (52)
with an 11/32” socket and remove it with the Lockwasher (51) from the Rotor Shaft
(21). Remove the Rotor (10) from (21). Use a slotted screwdriver for assistance. Check that the Carbide Bushing pressed into
(10) protrudes slightly.
Turn to (drawing 22):Remove the Rotor Shaft Upper Bearing Housing (26) by pulling and twisting it. Take out the Rotor Shaft
Static Seal (22) from the inside of (26). Inspect the interior of (22) for loss of spring tension (indicated by excessive dry deposits
of dirty or abrasive cleaning solution on the spring), replace as required. Check the drain holes on either side of (26) for
blockage.
Turn to (drawing 23): Also, check that the Carbide Bushing (34) pressed into the top of (26) protrudes slightly.
Remove the Gearbox Static Seal (24) from the top of the Gearbox (1), use a 1/8" slotted screwdriver if necessary. Inspect the
interior of (24) for loss of spring tension (indicated by excessive dry deposits of dirty or abrasive cleaning solution on the
spring), replace as required.
Turn to (drawing 24): Pull and twist the Output Shaft Bearing Housing (27) from (1).
Turn to (drawing 26): Remove the Output Shaft (12) from the Gearhead by first, unscrewing the Output Shaft Jam Set Screw
(63) and then the Output Shaft Set Screw (62) using a 3/32" Hex Key. Inspect the Output Shaft (12) for signs of scoring and
wear.
Go back to (drawing 24): Remove the other (24) from the opposite end of (1), use a 1/8" slotted screwdriver if necessary.
Inspect the interior of (24) for loss of spring tension (indicated by excessive dry deposits of dirty or abrasive cleaning solution on
the spring), replace as required.
