. MAINTENANCE SERVICE PROCEDURE BLEED AIR FROM REAR BRAKE WARNING 4 - 34 Stop the machine on level ground and put blocks under the wheels before ble To make it easier to bleed the air, warm the oil up to a temperature of at least 40°C (104°F) bef ore bleeding the air. Bleed the air from the rear bra kes in the same way on both the left a nd right sides. 1. Start the engine, check that the oil in the transmission case is the specified level, and check if the retarder oi pressure caution lamp is out. 2. Remove the cap installed to bleeder screw (1) of the slack adjuster, then insert a vinyl hose. Prepare a container with oil in it and insert the other end of the hose approx.
50 mm (2.0 in) below the surface of the oil. (Use any commercially available vinyl hose.) 3. Depress the brake pedal and loosen bleeder screw (1) approx. 3/4 turns. Keep the pedal depressed until no more bubbles come out from the vinyl hose. 4. After bleeding the air, tighten bleeder screw (1) securely and fit the cap. 5. The procedure for bleeder screw (2) of the rear brake is the same as for the slack adjuster. NOTICE The brake oil pressure caution lamp may light on during air bleeding. In that case, tighten the bleeder screw and check sight gauge (H) to see if some oil remains in the brake oil tank. If there is no oil left, stop the engine and fill with oil.
(When the engine stops, the oil level rises and the brake oil tank is automatically refilled with oil.) 6. After finishing air bleeding, stop the engine (for 2 to 3 minutes), and adjust the oil level so that it reaches the specified level. For details, see "CHECK OIL LEVEL IN TRANSMISSION CASE, ADD OIL (PAGE 3-74)". 1. Start the engine, check th at the oil in the transmission case is th e specified level, and che ck if the retarder oi 4. After bleeding the air, tight en bleeder screw (1) securely and 6. After finishing air bleeding hat it reaches the specified level. F