Shaft Seal on Sanden 709 Compressor, Replace
SHAFT SEAL, REPLACEMENT - SANDEN COMPRESSOR 709C3
Install the compressor in a clamp Use protectors so the unit is not damaged.
C4
Remove the nut retaining the clutch plate Use the counterhold from the tool kit and one 19 mm (3/4 in) jointed wrench (socket wrench with 19 mm (3/4 in) socket).
Note! when disassembling: Line up the different parts on the work bench in the order they are removed. This makes the reassembly process considerably easier.
C5
Remove clutch plate
Use the puller from the tool kit.
C6
Remove locking wedge
Carefully knock the wedge loose with a bronze or copper drift. A screwdriver can sometimes be easier to use, but be very careful that neither the wedge or the shaft are damaged.
C7
Remove 2 spacer washers
Use a screwdriver and the tool with a small hook. Keep a note of the order in which the spacers are installed.
They must be reassembled in the same order.
C8
Remove holder with the felt ring.
Use a screwdriver.
Wipe clean using a non-linting wiping cloth and blow clean carefully with compressed air.
C9
Remove inner circlip
Use circlip pliers.
C10
Remove sealing washer and 0 ring Use the black metal tool.
C11
Remove carbon seal
Use tool with the red grip. Press down the tool. turn clockwise and lift the carbon seal.
C12
Check that no particles or other contaminants have come loose from the carbon seal. Wipe clean with a non-linting wipe.
Note:
Do not use compressed air for blowing dean.
Installation
Note!
Do not touch the sealing surfaces with your fingers when opening the package
C13
Install shaft protection. The protection is to prevent damage to the carbon seal's 0 ring during installation
Lubricate the shaft protection exterior with compressor oil (ester oil) PIN 1161442-7
C14
Install carbon seal
Note:
Do not touch the sealing surface with your fingers.
Drop a little oil on the sealing surface on both the in and outside (refer to C13 for oil type).
Note!
Turn the carbon seal's metal surface down toward the compressor. Insert the carbon seal in tool with red shaft. Press seal carefully down over the shaft. Check that the carbon seal metal retainer goes completely down in the shaft chamfering. Detach the tool counter clockwise.
Note!
It is very Important that the metal retainer is located correctly. Points C16 and C17 cannot be carried out if this is not done.
C15
Remove the shaft protection
C16
Install the seal with 0 ring
Note:
Do not touch the sealing area against the carbon seal (lower surface) with your fingers.
Lubricate 0 ring using compressor oil (ester oil) P/N 1161442-7
Press on seal with the black metal tool.
C17
Install circlip
Press down circlip and seal until the ring snaps into position.
C18
Install retainer with felt ring (felt surface down) Use a socket that matches the retainer (e.g. 20 mm 25132 in) to press with.
The upper edge of the retainer should be just under the upper edge of the neck of the compressor.
C19
Replace the spacer washers
Replace in the same order which they were removed. (see C7).
C20
Install locking wedge
Very carefully knock the wedge into place with a drift or a screwdriver.
C21
Install clutch plate
Be sure the groove in the plate lines up exactly with the
wedge. Use fingers to feel whether the clutch plate is
located correctly.
Press the clutch plate down by hand as far as it will go.
C22
Very carefully knock the clutch plate into position
Use the sleeve from the tool set.
Check that the locking wedge is visible in the groove and has not slipped down.
C23
Install and tighten the clutch plate retaining nut.
Use the counterhold and tighten to 38 Nm (28 ft. lbs).
C24
Fill with oil.