5-15. LOWER SUSPENSION ARM (CONT)
Check position of hydraulic floor jack and make adjustments as necessary.
Remove suspension cylinder lower cylinder mounting pin from lower suspension arm (para. 4-41).
Remove locknut (2), hex head screw (3), and two access covers (4) from upper and lower suspension arms (5
and 1). Discard locknut.
Using tape measure, measure from ground to top of spindle (6). Record measurement.
With suspension in its normally installed position, the smaller end of the
shouldered shaft points toward curbside. Thus, on curbside suspensions, the
smaller end will be outboard, and on streetside suspensions, the smaller end will
Using hammer and drift, drive shouldered shaft (7) from lower suspension arm (1).
Using two people, separate lower suspension arm (1) from upper suspension arm (5) by pulling hydraulic jack,
with lower suspension arm (1) attached, away from upper suspension arm (5).
Remove two plain seals (8) from lower suspension arm (1). Discard plain seals.
Using hammer and brass drift, drive two sleeve bearings (9) from lower suspension arm (1).
Remove two grease fittings (10) from lower suspension arm (1).
Dry cleaning solvent (PD-680, Type III) is used to clean parts and is potentially
dangerous to personnel and property. Extinguish all smoking materials and do not
allow sparks or open flames near the work area. Use skin and eye protection and
work in a well-ventilated area. Flash point of dry cleaning solvent is 200F (93C).
Inspect lower suspension arm casting and attaching hardware for cracks, gouges, bends, and corrosion. Clean
with dry cleaning solvent. Replace any parts found defective.