LOWLANDER HD MK2 & WIDEBODY MANURE SPREADER – INSTRUCTION & SPARES MANUAL
Page 86
6.3.9 TROUBLESHOOTING - PNEUMATICS
PROBLEM CAUSE SOLUTION
TRACTOR (TRAILER CIRCUIT) LOW
PRESSURE WARNING BUZZER ON
ALL OF THE TIME
AIR LEAK IN SYSTEM
DISCONNECT TRAILER TO ASCERTAIN
WHETHER LEAK IS IN THE TRACTOR, OR TRAILER
COMPRESSOR OR UNLOADER/AIR
DRYER PROBLEM
CHECK IF COMPRESSOR IS BLOWING-OFF
AT UNLOADER, OR AIR DRYER.
LOW PRESSURE SWITCH PROBLEM
CHECK CONNECTIONS - REPAIR AS
NECESSARY CHECK LP SWITCH
PRESSURES AGAINST THOSE IN THE AIR
TANK (TRAILER CIRCUIT)
TRAILER BRAKES DO NOT
RELEASE WHEN SYSTEM FULLY
CHARGED, AND THE TRACTOR'S
HAND BRAKE IS RELEASED
INSUFFICIENT RED LINE "FLOW"
CHECK SELF-SEAL VALVE TO ENSURE IT IS
LIFTING SUFFICIENTLY TO ALLOW A HIGH
FLOW OF AIR TO THE TRAILER
INSUFFICIENT RED LINE PRESSURE
CHECK PRESSURE AT THE TRACTOR'S RED
COUPLING USING CALIBRATED AIR GAUGE.
PRESSURE SHOULD BE BETWEEN 6.5 BAR AND
8.5 BAR
PRESSURE STILL IN YELLOW LINE
CHECK TRACTOR'S IGNITION IS SWITCHED ON
CHECK CABLE LINKAGE (IF FITTED) TO
TRACTOR'S TRAILER CONTROL VALVE, AND
ADJUST/REPAIR AS NECESSARY
RELSV EXHAUST PORT BLOCKED
ENSURE RELSV EXHAUST IS OPEN
TRAILER BRAKES DO NOT APPLY
DURING TRACTOR BRAKING
INSUFFICIENT YELLOW LINE "FLOW"
CHECK LIFTER VALVE PRESENT IN
TRAILER'S YELLOW SUSIE
CHECK SELF-SEAL VALVE IN TRACTOR'S
YELLOW COUPLING
CHECK TRAILER'S YELLOW AIR LINES FOR
KINKS OR BLOCKAGES
INSUFFICIENT PRESSURE IN
TRAILER'S AIR TANK
CHECK THAT AIR FLOWS UNRESTRICTED
FROM PORT 1-2 OF RELSV, WHEN THE RED SUSIE
IS CONNECTED AND PRESSURIZED
INSUFFICIENT PRESSURE IN
TRAILER'S AIR TANK
POOR AIR FLOW TO TRAILER'S AIR
TANK
CHECK FOR KINKED OR BLOCKED PIPES
CHECK THAT AIR FLOWS UNRESTRICTED FROM
PORT 1-2 OF RELSV, WHEN THE RED SUSIE IS
CONNECTED AND PRESSURIZED
TRAILER'S BRAKES "SNATCHING"
RELSV NOT WORKING SMOOTHLY -
INPUT AND OUTPUT PRESSURES
JERKY WHEN COMPARED USING
AIR GAUGES
REPAIR/REPLACE RELSV AND ENSURE THAT ANY
REPLACEMENT IS SET UP CORRECTLY (SEE
INSTRUCTIONS ON SECTION 6.3.6 RELSV SETTING
INSTRUCTIONS)
TRAILER BRAKING TOO HARD, OR
TOO WEAK
INCORRECT LSV SETTING
RECOMMENDATION
INCORRECT SLACK-ADJUSTER
LENGTH
CHECK LENGTH AGAINST
RECOMMENDATION
INCORRECT BRAKE CHAMBER SIZE CHECK SIZE AGAINST RECOMMENDATION
LSV LINKAGE DAMAGED CHECK LINKAGE AND ANGLE IRON
TRAILER BRAKES GETTING TOO
HOT
HAND BRAKE PARTIALLY APPLIED CHECK HANDBRAKE CABLES/ADJUSTMENT
RESIDUAL PRESSURE IN BRAKES ENSURE NO AIR TRAPPED IN YELLOW LINE
HYDRAULIC LINE ALSO CONNECTED DISCONNECT HYDRAULIC BRAKE LINE
TRAILER BRAKES NOT GOING
INTO "EMERGENCY", AFTER RED
LINE REMOVED
KINKED PIPE IN LINE TO RELSV CHECK ALL PIPES TO PORT 1 OF RELSV
INCORRECT RED SUSIE COUPLING CHECK COUPLING HAS NO SELF-SEAL VALVE
RELSV EXHAUST PORT BLOCKED ENSURE RELSV EXHAUST IS OPEN
To Next Page