clockwise rotation. Should a fitting be removed for
inspection a sealant must be used when installation is
4-11. Tightening Hose Spud Clamps (Refer to Fig
a. At the first signs of leaking hoses, loose spuds,
and clamps, the steam cleaner operation should be
discontinued and repairs made.
b. Fittings should be inspected for cracks and
hose ends inspected for any concealed damage when
coupled. Always tighten two bolt clamps evenly,
securing alternately until tight.
4-12. Pressure and Temperature Gage Repair
(Refer to Fig 2-1)
a. Cracked, leaking or inaccurate pressure or
temperature on a gage is cause for replacement.
These gages are factory calibrated and field
adjustment cannot be accomplished.
b. Remove gage by disconnecting copper tube
line, three screws, washers and nuts fastening gage to
panel. Remove gage snubber from defective gage and
install on replacement gage. Reinstall gage on panel
and secure with screws. Replace copper tube line.
4-13. Hose Assemblies Repair (Refer to Fig C-1)
Hose assemblies cannot be repaired, if inspection
reveals leaks. Hose must be replaced immediately. If
leaks appear around the coupling area inspect and
tighten per instructions in paragraph 4-10.
The cleaner gun and nozzles are a most important
component of the cleaner and a damaged or leaky
gun, a frozen swivel, improper nozzle and/or nozzle
effectiveness and increase the physical effort
necessary to complete any cleaning task. As an
important component it should be kept in prime
condition at all times.
4-14. Gun Assembly Repair (Refer to Figs C-1
Gun assemblies can be cleaned and repaired to
extent of component replacement and swivel repairs.
Repair gun and nozzles with unit in the OFF
a. To clean guns (refer to fig C-2), remove nozzle,
turn on cleaner and flush gun for a few minutes.
Check nozzle for condition and nozzle orifice for
proper restriction size.
b. Tighten leaky swivel glands (refer to fig C-3)
by tightening packing gland nut until a slight
drag is felt when rotating gun grip extension or, if
leaking, until leaking ceases.
c. Swivel repair (refer to fig C-3) is accomplished
by replacing packing in swivel assembly. The
packing glands must be replaced when simple
tightening of packing gland nut will not stop leaking
without locking rotation.
(1) Unscrew packing gland cap and remove gun
grip extension from gun handle. Pull out packing ring
bushing and the three packings from swivel body.
(2) Install new packings, bushing with recess
facing collar or brass swivel bushing, reinsert and
screw on packing gland cap.
(3) Tighten packing gland cap until slight drag
is felt when rotating gun grip extension or, if leaking,
until leaking ceases.
4-15. Water Tank Assembly (Refer to Fig C-6)
The water tank assembly can be repaired by using
standard procedures to seal any leaks. Float valve,
rod, ball and inlet connectors are removable and must
be sealed if removed or replaced.
4-16. Water Pump Crankcase Oil (Refer to Fig
a. The water pump assembly should be filled with
S. A. E. 20 non-detergent oil and drained after the
first 100 hours. Following the first 100 hours of
operation drain each 750 hours thereafter of recorded
b. To drain oil, remove drain plug located under
pump which is accessible through pump and motor
mounting plate. When oil flow ceases reinstall plug,
secure and inspect for leaks.
4-17. Blower and Fuel Pump Belt Tension (Refer
to Fig C-7)
a. The fuel pump is mounted on a slotted base and
need not be removed for belt adjustment. As the
blower and fuel pump are driven by one common V-
belt, only one adjustment is required.
b. To check belt tension proceed as follows:
(1) Turn off main power supply to unit.
(2) Remove rear access panel by removing the
four fastening screws.
(3) Loosen the two bolts and nuts supporting
fuel pump to mounting base.
(4) Apply tension to fuel pump (towards back
of unit) until desired tension is achieved. Proper
tension of belt may be verified by twisting belt ½ to
¾ turn in either direction.
Do not over tighten belt as premature pump and
blower failure may occur.