Operation and maintenance manual

Section 250-0025
SM 2156 7-02
3
Braking System - Brake Coolant Tank
3. Check oil level and add if low. Sight gauge (6)
should show half full. If oil is required remove padlock,
open latch (2) and remove filler cap (3) from brake
coolant tank (1) and fill brake coolant tank with oil
specified in Section 300-0020, LUBRICATION
SYSTEM. Install filler cap (3) on brake coolant tank (1)
and secure with latch (2) and padlock.
Replacing Brake Cooling Oil
Brake cooling oil should be changed every 1 000 hours.
Refer to Section 300-0020, LUBRICATION SYSTEM,
for oil used in the system.
Note: When replacing the brake cooling oil due to a
hydraulic failure, or at recommended change interval,
element (14) must be replaced and brake coolant tank
(1), and strainer (34) cleaned thoroughly using a
suitable solvent. Breather (10) should also be replaced.
Note: When draining brake cooling oil, all six brake
assemblies should also be drained. Refer to Section
165-0015, OIL COOLED DISC BRAKES.
Replacing Filter Element
After first 100 hours of operation clean filter assembly
(13) and install new element (14).
Every 1 000 hours of operation, clean filter assembly
(13) and replace filter element (14).
1. Position the vehicle in a level work area, ensure the
body is fully lowered, apply the parking brake and
switch off the engine.
2. Block all road wheels, place the steering lock bar in
the 'Locked' position and the battery master switch in
the 'Off' position.
3. Remove blanking cap from remote drain assembly
(12) on the bottom of brake coolant tank (1). Install a
length of hose on remote drain fitting, open drain cock
and drain brake cooling oil into a suitable container.
Close drain cock, remove hose and reinstall blanking
cap on remote drain assembly (12).
4. Remove bolts (7) and washers (8) securing cover
plate (15) and gasket (16) to top of brake coolant tank
(1). Remove cover plate (15) and gasket (16) from
brake coolant tank (1). Discard gasket (16).
5. Remove filter assembly (13) from brake coolant tank
(1).
6. Remove and discard element (14) from filter
assembly (13).
7. Install new element (14) in filter assembly (13).
8. Install filter assembly (13) in brake coolant tank (1).
9. Secure cover plate (15) and new gasket (16) on
brake coolant tank (1) with bolts (7) and lockwashers
(8).
10. Remove padlock, open latch (2) and remove filler
cap (3) from brake coolant tank (1) and fill brake
coolant tank with oil specified in Section 300-0020,
LUBRICATION SYSTEM. Install filler cap (3) on brake
coolant tank (1) and secure with latch (2) and padlock.
Replacing Breather
Every 1 000 hours of operation, replace breather (10).
1. Position the vehicle in a level work area, ensure the
body is fully lowered, apply the parking brake and
switch off the engine.
2. Block all road wheels, place the steering lock bar in
the 'Locked' position and the battery master switch in
the 'Off' position.
3. Unscrew breather (10) and discard. Install new
breather (10).
Cleaning Strainer
Note: Strainer (34) should be cleaned every time brake
coolant tank (1) is drained for any reason. Refer to
'Replacing Brake Cooling Oil' for change interval.
1. Position the vehicle in a level work area, ensure the
body is fully lowered, apply the parking brake and
switch off the engine.
2. Block all road wheels, place the steering lock bar in
the 'Locked' position and the battery master switch in
the 'Off' position.
3. Remove blanking cap from remote drain assembly
(12) on the bottom of brake coolant tank (1). Install a
length of hose on remote drain fitting, open drain cock
and drain brake cooling oil into a suitable container.
Close drain cock, remove hose and reinstall blanking
cap on remote drain assembly (12).
4. Remove bolts (21) and washers (22 & 23) securing
heatshield (18) to front of brake coolant tank (1).
Remove heatshield (18) from tank.