Section Il. CRANE, SUBFRAME, AND SWING DRIVE
M977, M985, and M984E1 Crane Maintenance Instructions
17-2. HYDRAULIC HOSES, TUBES, AND FITTINGS REMOVAL/INSTALLATION.
This task covers:
a. Disconnect Quick Couplings
i. Type 3 Clamp and Bracket Removal
b. Connect Quick Couplings
j. Type 3 Clamp and Bracket Installation
c. Disconnect Hydraulic Hoses and Tubes
k. Type 4 Clamp Removal
d. Connect Hydraulic Hoses and Tubes
l. Type 4 Clamp Installation
e. Type 1 Clamp Removal
m. Type 5 Clamp Removal
f. Type 1 Clamp Installation
n. Type 5 Clamp Installation
g. Type 2 Clamp Removal
o. Hydraulic Hose and Tube Removal/Installation
h. Type 2 Clamp Installation
p. Follow-on Maintenance
TM or Para
TM 9-2320-279-10 Crane in operating position
and supported by suitable
TM 9-2320-279-10 Shut off engine.
Special Environmental Conditions
Tags, identification, Item 60, Appendix C
General Safety Instructions
MOS 63W, Wheel vehicle repairer
Level of Maintenance
Subparagraphs a through n show
all typical connections and
clamps used on the M977 and
This procedure is for reference
only to show location of hoses,
tubes, and fittings used on the
M977 and M985 cranes. It will
never be necessary to remove all
hydraulic hoses at one time.
Individual procedures will
indicate the area where hoses are
to be removed and installed.
a. Disconnect Quick Couplings.
Push ring (1) away from hose fitting (2) and
pull hose free.
b. Connect Quick Couplings. Push ring (1) away from hose fitting (2) and push hose in until seated.
Release ring (1) while holding pressure on hose fitting (2).
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