MAINTENANCE 4.9 EVERY 50 OPERATING HOURS OR WEEKLY 4.9.5 HYDRAULIC OIL COOLERS - INSPECT AND CLEAN IF NECESSARY See illustration Z 20369 Provide adequate working platform for safe access to the hydraulic oil coolers. 1. Loosen mounting bolts (1). 2. Open door (2). REMARK Details (A and B) i show LH hinge mounted oil coolers. The description below applies also to RH mounted oil coolers. 3. Loosen fasteners (3) and swing out oil coolers (4 and 5). 4. Secure door (2) and oil coolers (4 and 5) with locking bars (7, 8 and 9). 5. Clean the oil coolers with compressed air. Direct the air flow from inside to outside. 6. After cleaning, bring back the oil coolers to their home posi- tion.
PROCEED AS FOLLOWS G Disengage locking bars (7, 8 and 9) and bring them in storage position (10). G Swing back inner cooler (5). Take care guide pin (A) fits into hole (B) of main frame (6). Secure cooler (5) with fastener (3). G Swing back outer cooler (4); observe (A - B) and secure with fastener (3). G Close door (2); observe (B - A). Install mounting bolts (1) and tighten securely. NOTICE When cleaning the oil coolers, inspect also laying and fas- tening of the hydraulic oil lines. 345 CAUTION