TM 5-2420-224-20-2
BACKHOE BOOM CYLINDER REPLACEMENT (CONT)
C A U T I O N
Cap or plug all ports and ends
of hoses and tubes to prevent
contamination of hydraulic oil.
Failure to do so may result in
damage to equipment.
NOTE
Tag lines prior to disconnecting to
aid in connecting.
4.
DISCONNECT three HOSES (7, 8, and 9).
INSTALL CAPS or PLUGS.
5.
REMOVE clamp (10), TUBE (11), two fittings
(12 and 13), and two packings (14 and 15).
DISCARD PACKINGS.
6.
ON LEFT SIDE, REMOVE nut (16), lock
washer (17), screw (18), spacer (19), and
retainer STRAP (20). DISCARD lock WASHER.
7.
REMOVE pin (21) and boom CYLINDER (22).
I N S T A L L A T I O N
1.
2.
3.
4.
5.
6.
7.
NOTE
Procedure is the same for both
boom cylinders, except as noted.
INSTALL boom CYLINDER (22) and pin (21).
INSTALL two fittings (12 and 13), two new
packings (14 and 15), TUBE (11), and clamp
(10).
ON LEFT SIDE, INSTALL retainer STRAP
(20), screw (18), spacer (19), new lock
washer (17), and nut (16).
REMOVE CAPS or PLUGS. CONNECT three
HOSES (7, 8, and 9).
INSTALL CAPSCREW (6) and nut (5).
INSTALL WASHER(S) (4) as required to
maintain 0.040-in. (1-mm) clearance. INSTALL
rod EYE on rod (3).
INSTALL two washers (2) and two snap
RINGS (1).
NOTE
Follow-on Maintenance:
Check rear hydraulic tank (LO 5-
2420-224-12).
4-659
