Input Shaft: Testing and Inspection

Input Shaft Checking for Wear





4 - Piston

• Checking for wear, refer to => [ Checking Pistons and Thrust Plate for Wear ]

5 - Pressure plate

• Checking for wear, refer to => [ Checking Pistons and Thrust Plate for Wear ]

11 - Input shaft cylinder

• Check running and sealing surfaces for wear, refer to => [ Check Input Shaft Cylinder Running and Sealing
Surfaces for Wear ]

• Checking for signs of wear caused by coated plate, refer to => [ Check Inner Circumference of Input Shaft Cylinder
for Scoring from Lining Discs. ]

13 - Oil pipe

• Checking for wear, refer to => [ Checking Oil Pipe for Wear ]

Checking Pistons and Thrust Plate for Wear





- Remove pistons - 1 - from thrust plate - 2 -.

Check thrust plate - 2 -

- Check thrust plate running and sealing surfaces - arrow A - for wear.

- Check thrust plate running and sealing surfaces - arrow D - for wear.

• If running or sealing surfaces - arrow A - show grooves, scratches or scoring, thrust plate - 2 - must be replaced.

• If running or sealing surfaces - arrow D - show grooves, scratches or scoring, thrust plate - 2 - and pistons - 1 - must be replaced.

Checking pistons - 1 -

- Check seal - arrow B - on outer piston circumference - 1 - for damage.

- Check running surface - arrow C - on interior piston circumference - 1 - on shaft.

• If seal - arrow B - is damaged or piston running surface - arrow C - shows grooves, scratches, scoring or uneven thickness from wear, piston - 1 - must be replaced.

Check Input Shaft Cylinder Running and Sealing Surfaces for Wear





- Check input shaft running and sealing surfaces - arrow A - for wear.

• Shaft seal in input shaft cover seals at this sealing surface - arrow A -.

• Light scoring from shaft seal is normal.

- Check ball bearing running surface - arrow B - in input shaft cover for wear.

- Check shaft seal - arrow C - for damage.

• If seal - arrow C - is damaged or shaft running surfaces - arrow B - or - arrow A - show deep scoring or grooves, entire input shaft must be replaced.

Check Inner Circumference of Input Shaft Cylinder for Scoring from Lining Discs.





- Check inner circumference of input shaft cylinder for scoring from lining discs - arrows -.

• If there is scoring on interior circumference of input shaft cylinder from lining discs - arrows -, entire input shaft must be replaced.

Checking Oil Pipe for Wear





- Check oil pipe seal - 1 - for damage.

• The seal must have a gap - arrow B -.

• If gap - arrow B - is completely closed, oil pipe must be replaced.

- Check oil pipe running surfaces - arrows - and rotor blades - arrow A - for wear, cracks and damage.

• If seal - 1 - or rotor blades - arrow A - are damaged or running surfaces - arrow - show deep scoring or grooves, oil pipe must be replaced.

• The O-ring - 2 - must always be replaced.

- Always check oil pipe running surfaces in suction jet pump. Refer to => [ Suction Jet Pump Checking Wear ] Testing and Inspection.