4-41. SUSPENSION CYLINDER (CONT)
The hydraulic lines and cylinder may be under pressure. Use caution when
loosening hydraulic lines to avoid any spraying of hydraulic fluid or injury to
personnel may result.
Place a drain pan under straight adapter fittings (3) on suspension isolation valve (4) and proceed as follows:
When disconnecting hydraulic lines and fittings, it is important to use two
wrenches, one to hold the fitting and one to turn the hose, or damage to equipment
a. Using two wrenches, slowly loosen two hydraulic hoses (5) enough so that pressure will bleed from suspension
cylinder (6) and hydraulic hoses (5).
b. Once fluid starts to bleed, hold hoses in place and allow all pressure to vent before removing hydraulic hoses (5)
from straight adapter fittings (3).
Operate hydraulic floor jack (1) and raise the lower suspension arm (2) enough to allow suspension chain (7) to
All fittings and openings must be capped or plugged immediately after opening to
prevent dirt, moisture, or foreign material from entering the hydraulic system or
damage to equipment may result.
Tag and disconnect two hydraulic hoses (5) from straight adapter fittings (3) on suspension isolation valve (4).
Install caps/plugs into openings.
Remove screw (8), block clamp (9), and, if necessary, self-locking nut (10) (#4 bogie only). If removed, discard
Tag and disconnect two air hoses (11) from fittings (12) at bulkhead. Install caps/plugs into openings/fittings.
Remove six capscrews (13), lockwashers (14), hose shield (15), and hose shield (16) from upper suspension arm
Mark location of both hose clamps (18) and hose clamps (19) on hydraulic hoses (5).