Download Print this page

Generac Power Systems 004992-0, 004992-1, 37kW NG, 40kW LP Owner's Manual: Section 4 - Maintenance; Maintenance Performed By Authorized; Service Facilities; Cooling System

Liquid-cooled, prepackaged standby generator.
Hide thumbs

Advertisement

4.1
MAINTENANCE PERFORMED BY
AUTHORIZED SERVICE DEALERS
A. EVERY THREE MONTHS
1. Check battery state of charge and condition.
2. Inspect and test fuel system.
3. Check transfer switch.
4. Inspect exhaust system.
5. Check engine ignition system.
6. Check fan belts.
B. ONCE EVERY SIX MONTHS
1. Test Engine Safety Devices (low oil pressure, low
coolant level, high coolant temperature).
C. ONCE ANNUALLY
1. Test engine governor. Adjust or repair, if needed.
2. Clean, inspect generator.
3. Flush cooling system.
D. FIRST 100 OPERATING HOURS
1. Change engine oil and oil filter. (After initial
change, service engine oil and filter at 150 oper-
ating hours or 6 months, whichever comes first.)
2. Retorque cylinder head. (See Torque Specs,
Section 1.13.)
3. Retorque intake and exhaust manifold. (See
Torque Specs, Section 1.13.)
E. EVERY 500 OPERATING HOURS
1. Service air cleaner.
2. Check starter.
3. Check engine DC alternator.
4.2

COOLING SYSTEM

Air intake and outlet openings in the generator com-
partment must be open and unobstructed for contin-
ued proper operation. This includes such obstruc-
tions as high grass, weeds, brush, leaves and snow.
Without sufficient cooling and ventilating air flow, the
engine/generator quickly overheats, which causes it
to shut down. (See Section 6 for installation drawings
and vent locations.)
The exhaust system parts from this product get
extremely hot and remain hot after shutdown.
High grass, weeds, brush, leaves, etc. must
remain clear of the exhaust. Such materials may
ignite and burn from the heat of the exhaust
system.
16 Generac
®
Power Systems, Inc.
Section 4 — Maintenance
Guardian 40kW Liquid-cooled Generators
4.3
OVERLOAD PROTECTION FOR
ENGINE DC ELECTRICAL SYSTEM
Engine cranking, start up and running are controlled
by a solid state Engine Controller circuit board.
Battery voltage is delivered to that circuit board via a
15 amp fuse. These overcurrent protection devices
will open if the circuit is overloaded.
If a circuit breaker opens or a fuse element
!
melts, find the cause of the overload before
resetting the circuit breaker or replacing the
fuse.
4.4

CHECKING FLUID LEVELS

4.4.1 CHECK ENGINE OIL
Check engine crankcase oil level (Figure 4.1) month-
ly, or prior to use.
• Remove oil dipstick and wipe dry with a clean,
lint-free cloth.
• Install oil dipstick, then remove again.
• Oil should be between FULL and ADD marks.
• If oil level is below the dipstick ADD mark, remove
oil fill cap. Add the recommended oil to bring oil
level up to the FULL mark. DO NOT FILL ABOVE
THE "FULL " MARK. See Section 1.14 for recom-
mended oils.
Figure 4.1 - Oil Dipstick and Oil Fill Cap
Oil Dipstick
Oil Filter
4.4.2 BATTERY FLUID
Check battery electrolyte fluid at least once weekly.
Fluid should cover separators in all battery cells. If
fluid level is low, add distilled water to cover tops of
separators. DO NOT USE TAP WATER IN BATTERY.
4.4.3 ENGINE COOLANT
Check coolant level in coolant recovery bottle. See
Specifications, Section 1.10.
Oil Fill

Advertisement

   Related Manuals for Generac Power Systems 004992-0, 004992-1, 37kW NG, 40kW LP

   Related Content for Generac Power Systems 004992-0, 004992-1, 37kW NG, 40kW LP

This manual also for:

Guardian 004992-0, Guardian 004992-1

Comments to this Manuals

Symbols: 0
Latest comments:
  • Byron Woodall Aug 03, 2016 11:25:
    does generac ever have any cold solder joints in their circuit boards n the 4992-1 gen-set 40KW unit.
  • ROBERTO Dec 09, 2014 06:23:
    (1)COOLANT LEVER SENSOR GENERATOR KOHLER WITH JOHN DEERE ENGINE 4-CYLINDER​;

    KOHLER 37KW
    MODEL​# 40ROZJ61
    S​ERIAL# 368864

    EN​GINE SERIAL# CD4039D228​041
    ENGINE FAMILY# 4039DF

    MY EMAIL IS LTBP.ROBER​TO@GMAIL.C​OM