HYDRAULIC SYSTEM MLC165-1 SERVICE/MAINTENANCE MANUAL
2-24
Published 05-26-17, Control # 238-02
Replacing Desiccant Breather Cartridge
See Figure 2-24 for this procedure.
1. Stop the engine.
2. Vent the pressure from the hydraulic tank (6) using
either air vent valve (4).
3. Remove the breather access cover (3).
4. Unscrew the breather from the hydraulic tank (6).
5. Unscrew the reusable cap (5a) from the breather
cartridge (5b) and dispose of the used breather cartridge
properly. Do not discard the cap.
6. Remove protective caps from top and bottom of new
cartridge.
7. Securely attach the reusable cap (5a) to the cartridge
(5b). Hand tighten only.
8. Securely attach the breather to the hydraulic tank (6).
Hand tighten only.
9. Start the engine and allow the hydraulic system to reach
it’s normal operating temperature.
10. Check the breather for leaks and service as required.
Figure 2-24. Hydraulic Tank
Item Description Item Description
1 Cover 6 Hydraulic Tank
2 Fill Plug Access Cover 7 Return Filter (3)
3 Breather Access Cover 7a Filter Cap
4 Air Vent Valves (2) 7b Filter Body
5a Breather Cartridge 7c Filter Element
5b Reusable Cap (do not discard) 7d O-Rings
Left-Side Enclosure
Shown with Cover (1) Removed
WARNING
Burn Hazard
Oil in hydraulic tank may be under pressure and
extremely hot. Allow the hydraulic oil to cool before
replacing the desiccant breather cartridge.
Hot oil can escape when removing the breather. Relieve
pressure at the air vent valve (4, Figure 2-24
) in the top of
the tank before servicing the breather.
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