Maintenance; Lubrication And Service; 730E Service Capacities; Hydraulic Tank Service - Komatsu 730E Operation & Maintenance Manual

OM4035.1 01/04

Lubrication and Service

Recommended Preventive Maintenance will contribute
to the long life and dependability of the truck and its
components. The use of proper lubricants and the per-
formance of checks and adjustments at recommended
intervals is most important.
Lubrication requirements are referenced to the lube
key found in the Truck Lubrication Specifications Chart
(page 4-2). For detailed service requirements for spe-
cific components, refer to the Shop Manual Section for
that component (i.e. Section "H" for Suspensions, Sec-
tion "L" for Hydraulic System, etc.).
Refer to manufacturer's service manual when servicing
any components of the General Electric System.
Refer to engine manufacturer's service manual when
servicing the engine or any of its components.

730E SERVICE CAPACITIES

Crankcase:
(including lube oil filters).
Komatsu SSA16V159 Engine
Cooling System:
Komatsu SSA16V159 Engine

Hydraulic System:

Refer to "Hydraulic Tank Ser-
vice".

Wheel Motor Gear Box

(each side)
Fuel Tank (Diesel Fuel Only)
The service intervals presented here are in hours of
operation. These intervals are recommended in lieu of
an oil analysis program which may determine different
intervals. However, if truck is being operated under
extreme conditions, some or all, of the intervals may
need to be shortened and the service performed more
frequently.
Many Komatsu trucks are equipped with an Automatic
Lubrication System option. The initial setup for this sys-
tem provides for nominal amounts of lubricant to be
delivered to each serviced point. The lubrication injec-
tors can be adjusted to vary the amount of lubricant
delivered. In addition, the timer for lubrication intervals
is normally adjustable. Consult the "Options and
Accessories", Section "M", of the truck service manual
for adjustments to these devices.
LUBRICATION AND SERVICE

HYDRAULIC TANK SERVICE

There are two sight gauges on the side of the hydraulic
tank. With engine stopped, keyswitch "off", hydraulic
system bled down and body down, oil should be visible
in the top sight gauge. If hydraulic oil is not visible in
the top sight gauge, follow "Adding Oil" instructions
below.
Adding Oil
Keep the system open to the atmosphere only as long
as absolutely necessary to lessen chances of system
contamination.
Service the tank with clean Type C-4 hydraulic oil only.
All oil being put into the hydraulic tank should be fil-
tered through 3 micron filters.
Liters U.S.
Gal-
lons
214 56.6
409 108
731 193
39.7 10.5
3217 850
5. With engine stopped, keyswitch "off", hydraulic
system bled down and body down, check to see
that hydraulic oil is visible in the top or lower sight
gauge.
6. If hydraulic oil is not visible in the top sight gauge,
remove the tank fill cap and add clean, filtered C-
4 hydraulic oil (Lubrication Chart, Lube Key "D")
until oil is visible in the top sight gauge.
7. Replace fill cap.
8. Start engine. Raise and lower the dump body
three times.
9. Repeat steps 1 through 4 until oil is maintained in
the top sight gauge with engine stopped, body
down, and hydraulic system bled down
Maintenance - Section 4
Page 4-1