Hobart 90CU24, Руководство по эксплуатации и обслуживанию

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8.
Voltage Regulator Maintenance/Repair
When the voltage regulator is working properly, no maintenance is necessary. However, if the
generator set is used in a dusty environment, the regulator should be periodically cleaned with
compressed air.
The voltage regulator, which is in fact a PC board, does not lend itself to field repair. For the
convenience of maintenance personnel, this voltage regulator is designed to be trouble-free and simple
to put back into service once it has malfunctioned or if it is not functioning properly. Most malfunctions
of the voltage regulator will be corrected by (1) removing and replacing the PC board, and (2) making
voltage and line-drop adjustments after installing the new board. To remove and replace voltage
regulator PC board, proceed as follows:
a. Disconnect the 16-pin connector.
b. Remove the nuts and washers which attach the voltage regulator to the four shock mounts which
are attached to the inside right panel of the control box. Exercise care to avoid breaking or dropping
the PC board.
c. Place the new voltage regulator PC board on the four shock mounts from which the defective PC
board was removed, and fasten the new PC board securely in place with the nuts and washers
which were previously used.
d. Re-connect the 16-pin connector, and make certain that this connection is securely made.
9.
Cold Weather Starting Aid Servicing and Troubleshooting
When servicing or troubleshooting the cold weather starting kit, make certain
that this work is done in a well ventilated area. Goggles should be worn to
protect eyes when servicing this kit.
Many vehicle components can affect cold weather starting. The following instructions are limited to
troubleshooting of the Dieselmatic System. The most common problems are (1) an empty fluid cylinder,
and (2) a clogging metering orifice.
a. Check Fluid Cylinder Contents And Valve Gasket.
(1)
Clean all dirt from neck of cylinder and top of valve before removing the fluid cylinder. Protect top
of valve from dirt when cylinder is removed.
(2)
An empty net weight 21 oz. fluid cylinder weighs 16 oz. (454 gr.), and a full fluid cylinder weighs
37 oz. (1049 gr.).
(3)
Check that fluid cylinder has pressure.
(4) Check valve gasket. If gasket inside valve is damaged or worn, replace with a new gasket, KBI
Part Number 300012. Make sure only one gasket is used, as two gaskets would prevent valve
from operating.
(5) Cylinder, or its replacement, should be reinstalled hand tight. Coupling Dirt Eliminator may be
transferred from old cylinder to new cylinder or replaced with a new one, KBI Part Number
300830.
b. Check of electrical system.
Electrical shock can kill. Do not touch live electrical parts.
(1) Check to see if fuse is blown. Check all wiring for loose connections, shorts, and broken wires.
(2)
Check that the Dieselmatic System is wired correctly.
WARNING
WARNING
OM-2084 / Operation and Maintenance Manual
90CU24 / Series 500392 Generator Sets
November 27/1997 Chapter 2-2
Page 13