TM 55-4920-404-30&P
MAINTENANCE INSTRUCTIONS
Section I.
SHELTERS
3-1. SHELTER MAINTENANCE. Maintenance
10-5410-224-14 and for the S-280 shelter in TB 750-
procedures for the SPAM shelter are given in TM
240 and TM 55-4920-403-20&P.
Section II.
FIXTURES
the "D" ring on the shelter. Position the new cable
assembly and install the appropriate hardware. Be
a. Workbench/Storage Cabinet. The work-
sure to crimp the hook over the "D" ring to secure it.
bench/storage cabinet is part of the tool set and is
listed in Supply Catalog SC 4920-99-CL-A91. To re-
(b) The ECU support shelf itself may be re-
place the cabinet, remove hold down bolts and hard-
placed by removing the "D" ring as previously ex-
ware. Remove the unserviceable cabinet and re-
plained and removing three screws. Reverse this
place with a serviceable one. Reinstall the bolts and
procedure to install a new shelf support.
hardware removed from the old cabinet. The drawer
(c) The hinge may be replaced by removing
type storage cabinet, screen type storage cabinet,
three screws and drilling out 13 rivets. Rivet the re-
and welding table may be replaced following the
placement hinge to the shelter and reinstall three
same procedure used for the workbench/storage
screws.
cabinet.
d. Compressed Air Panel. The compressed air
b. Brackets and Supports. To replace the fire
panel connector installed through the wall of the S-
extinguisher bracket remove the bolts and hard-
280 shelters may be replaced by removing the two
ware holding it to the wall and replace with ser-
bolts securing it to the mounting plate. Apply seal-
viceable bracket. Reinstall bolts and hardware re-
ant to the replacement connector and reinstall
moved from the old bracket. ECU shipping frames,
mounting bolts.
oxygen, and acetylene tank brackets are replaced
e. Hydraulic Mule Wall Mounted Connector.
using the same procedure followed for replacement
The hydraulic mule connectors installed through
of the fire extinguisher brackets.
the wall of the hydraulic shop can be replaced by re-
c. Repairs and Replacement of the ECU Shelf
moving the hardware securing them to the panel
Assembly.
and installing serviceable connectors.
(1) Repairs for the ECU shelf for the SPAM
f. Storage Cabinet stacks. If the storage cabi-
shelters are covered in TM 10-5410-224-14.
net stacks in the tool crib require replacement, re-
(2) Repairs and replacement of the ECU shelf
move all contents of both stacks. Unbolt and remove
assembly used on the S-280 is as follows:
the top braces between the two stacks. Next, remove
bolts securing the stack to the floor and remove the
(a) The ECU support cable assembly may
defective stack. Install the replacement stack by re-
be replaced by drilling out the two blind rivets, re-
versing the above procedure.
moving the two screws and removing the hook from
MOUNTED ITEMS
Section III.
being qualified under the same stock number, re-
3-3. M O U N T E D T O O L S , I N S T A L L A T I O N
AND REPLACEMENT. Tools which are mounted
placement tools may mount differently from the
original tools (for example, some vises have three
on benches or secured to the floor in the shelters are
mounting holes others have four). Repair parts
part of the tool set and are listed in Supply Catalog
SC 4920-99-CL-A91. Replacements maybe installed
should be installed in accordance with applicable
technical Manuals and manufactures literature.
using the mounting hardware removed from the un-
serviceable tools. Due to different manufacturers
