P 3 / 7
R
epair
1) Remove Base and M4x16 Hex. socket head bolt using Hex. wrench 3 (Standard accessory).
2) Slide the the protrusions of Dust cover and remove Dust cover from Housing set. (Fig. 3)
3) Remove nine 4x18 Tapping screws and one 4x35 Tapping screw. Housing R can be removed. (Fig. 3)
Refer to Figs. 4 (4326, 4326M, 4327, 4327M, M438) and 4a (4328, 4329, M439).
1) Remove Slider section from Collar sleeve.
2) Remove Collar sleeve from Gear complete. As for 4326, 4326M, 4327, 4327M and M438, Bearing case complete,
Thrust plate and Gear complete can be removed in this step.
3) As for 4328, 4329 and M439, remove Retaining ring S-6 from the pin of Bearing case complete using 1R291.
Bearing case complete, Push plate, Balance plate and Gear complete can be removed.
[3] Disassembling of Housing R
[4] Disassembling Gear Section
Fig. 3
Tapping screw 4x35
Tapping screw 4x18: 9 pcs.
Protrusions of Dust cover
Depressions in the grooves of Housing set
Note: Be sure to slide the protrusions out of
the depressions.
Collar sleeve
[Slider section]
Fig. 4
Gear complete
Pin 3
Balance plate
Bearing case complete
Dust seal
Retaining ring S-6
Slider support
Push plate
Collar sleeve
Pin 3
Bearing case complete
Gear complete
Thrust plate
Balance plate
[Slider section]
Slider
Slider guide
Slider guide
Polyurethane sponge seal
Polyurethane
sponge seal
Seal plate
Slider
Fig. 4a
