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MAINTENANCE
3-15
365 MM173 (3---90)
HYDRAULIC SYSTEM TROUBLESHOOTING
Problem
Cause
Remedy
Bad coil at S2.
Replace coil.
Bad seal at S2.
Replace seal.
Bad electrical connection
Remake connection.
at S2.
Circuit breaker tripped CB-5.
Reset circuit breaker CB-5.
Look for short circuit.
Bad electrical relay M4.
Replace electrical relay M4.
Hopper lift micro-switch
Check connection at
not operating.
micro-switch. Check adjustment of
hopper and fan inlet bracket.
Main brush micro-switch
Check connections at
not operating.
micro-switch on main brush handle.
Bad relief valve at R1.
Replace relief cartridge R1.
Bad coil at S3.
Replace coil.
Cartridge stuck open at S3.
Replace cartridge.
Bad electrical connection
Remake connection.
at S3.
Two-speed rocker switch not
Replace rocker switch or
working.
check electrical connections.
Circuit breaker tripped CB-5.
Reset circuit breaker CB-5.
Look for short circuit.
Bad coil at S4.
Replace coil.
Cartridge stuck open at S4.
Replace cartridge.
Bad seal at S4.
Replace seal.
Bad electrical connection
Remake connection
at S4.
Hopper lift micro-switch
Check connection of
not operating.
micro-switch at hopper.
Thermo-Sentry
t
indicator
Reset Thermo-Sentry
t
switch
tripped
or replace it.
Vacuum fan rocker switch
Replace rocker switch or
not operating.
check electrical connections.
Relief valve R1 is stuck
Replace valve R1
open.
Circuit breaker tripped CB-5.
Reset circuit breaker CB-5.
Main brush does not turn.
Everything else works fine.
Vacuum fan does not turn.
Everything else works fine.
Two speed function of
main brush and vacuum
fan does not work. Operates
at slow speed only.
Main brush and vacuum fan
does not turn. Hopper does
not lift.
Summary of Contents for 365
Page 1: ...r 365 MM173 ...
Page 6: ...ABOUT THIS MANUAL 365 MM173 3 90 d ...
Page 16: ...SPECIFICATIONS 365 MM173 3 90 1 2 ...
Page 20: ...SPECIFICATIONS 365 MM173 3 90 1 6 ...
Page 22: ...OPERATION 365 MM173 3 90 2 2 ...
Page 42: ...OPERATION 365 MM173 3 90 2 22 ...
Page 56: ...MAINTENANCE 365 MM173 3 90 3 14 03767 HYDRAULIC SCHEMATIC ...
Page 98: ...MAINTENANCE 365 MM173 3 90 3 56 ...
Page 100: ...APPENDIX 365 MM 3 90 4 2 ...