5
B. Double Reduction
Both spiders should be removed from the rear of the gear
case, No. 867907. Remove the retainer ring, No. 844364,
and press the bearing, No. 847147, out the front of the gear
case.
If replacement of the idler gear pins is necessary, they
should be pressed out the rear of the spider See Fig. 2 for
replacement pin height.
2nd Reduction Spider 1st Reduction Spider
Fig. 2 - DOUBLE REDUCTION SPIDERS
MOTOR DISASSEMBLY
Slip the front bearing plate and bearing off the front of the
rotor and remove the cylinder and four (4) rotor blades, No.
863738. Set the rear bearing plate on the vise jaws with the
rotor hanging down. Use a 7/32" punch to drive the rotor out
of the rear rotor bearing.
HANDLE DISASSEMBLY
A. Straight
For inspection or replacement of the shut-off valve or valve
seal, unscrew the air inlet bushing. On reversible tools/ the
reversing valve, No. 869253, may be removed by unscrew-
ing the valve retainer screw, No. 867878.
The air inlet screen should be washed in a solvent and
blown out in the reverse of normal air flow. Replace the
screen if clogged or torn.
B. Pistol Grip
On non-reversible tools/ removing the motor block, No.
869236, from the front of the backhead will allow the
removal of the shut-off valve and related components.
DISASSEMBLY - GENERAL
(ALL MODELS)
Clamp the backhead in a soft-jawed vise and unscrew (left
hand threads) the clutch housing. Remove the clutch
assembly. Unscrew and remove the gear case assembly.
The trip rod and motor unit may now be removed from the
front of the backhead. See the following paragraphs for
complete disassembly instructions on the various sub-
assemblies.
CLUTCH DISASSEMBLY
Remove the retainer ring, No. 412055, and unscrew the
adjustment nut, No. 867875. For quick change clutches,
remove the retainer ring, No. 833688 This will release the
washer, No. 864249; spring, No. 202842; release sleeve,
No. 202833; and ball, No. 844265. Remove retainer ring,
No. 619524 and spindle bushing, No. 202820. Then re-
move the adjustment nut No. 867875. That will release the
adjustment lock plate No. 867876, both bearing races No.
863455, thrust bearing No. 847104, torque spring No.
867938, ball retainer No. 867881, and six (6) steel balls No.
842162. Wash the spindle assembly in a solvent. Remove
the ball retainer ring, No. 867923, and ball retainer plug,
No. 867908. Rotate the clutch spindle to allow the sixteen
(16) steel balls, No. 844265 to drop out of the ball loading
hole located in the clutch cam, No. 867940. Separate the
clutch spindle and clutch cam.
GEAR CASE DlSASSEMBLY
A. Single Reduction
The spider should be pressed out the rear of the gear case,
No. 867871. Remove the retainer ring, No. 844364, and
press the bearing, No. 847147, out the front of the gear
case.
If replacement of the idler gear pins is necessary, they
should be pressed out the rear of the spider. See Fig. 1 for
replacement pin height.
Fig. 1 - SINGLE REDUCTION SPIDER
SERVICE INSTRUCTIONS
.240
.255
Front
Rear
.360
.375
Front
Rear
.240
.255
Front
Rear
Содержание 823150PT
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