woodmizer LT30 Guide

D42 Engine
Safety, Operation, Maintenance
& Parts Manual
LT30 Super rev. G9.00 - J3.04
LT40 Super rev. H1.00 - J4.04
LT30HD Super rev. H4.00 - J8.05
LT40HD Super rev. H4.00 - J8.05
Safety is our #1 concern! Read and understand
all safety information and instructions before oper-
ating, setting up or maintaining this machine.
January 2004
Form #917

ii D4297doc062215 Table of Contents
Table of Contents Section-Page
ABOUT THIS MANUAL III
SECTION 1 OPERATION 1-1
1.1 Starting The Engine................................................................................1-1
SECTION 2 MAINTENANCE 2-1
2.1 Safety......................................................................................................2-1
2.2 Cooling System ......................................................................................2-2
2.3 Fuel Filter ...............................................................................................2-3
2.4 Battery ....................................................................................................2-4
2.5 Alternator Belt ........................................................................................2-5
2.6 RPM Adjustments ..................................................................................2-7
SECTION 3 REPLACEMENT PARTS 3-1
3.1 Fuel Tank................................................................................................3-1
3.2 Engine Mount Assembly ........................................................................3-2
3.3 Engine Assembly....................................................................................3-3
3.4 Primary Fuel Filter .................................................................................3-5
3.5 Throttle Assembly ..................................................................................3-6
3.6 Muffler Assembly...................................................................................3-8
3.7 Drive Assembly ......................................................................................3-9
3.8 Drive Assembly ....................................................................................3-10
LT30 Super Rev. F7.00 - H3.00
LT40 Super Rev. F8.00 - H4.00
LT30HD Super Rev. G1.00 - H7.00
LT40HD Super Rev. G1.00 - H7.00
3.9 Radiator Assembly ...............................................................................3-11
LT30 Super Rev. H7.00+
LT40 Super Rev. H8.00+
LT30HD Super Rev. J2.00+
LT40HD Super Rev. J2.00+
3.10 Radiator Assembly ...............................................................................3-13
LT30 Super Rev. G9.00 - H6.00
LT40 Super Rev. H1.00 - H7.00
LT30HD Super Rev. H4.00 - J1.00
LT40HD Super Rev. H4.00 - J1.00
3.11 Alternator Assembly.............................................................................3-15
3.12 Engine Pulley Guards ...........................................................................3-17
INDEX I
TOC

About This Manual D4297doc062215 iii
ABOUT THIS MANUAL
This manual is provided as a supplement to the equipment manufacturer’s manuals. This
manual provides information specific to the use of this equipment on the Wood-Mizer®
sawmill. Refer to the sawmill operator’s manual and manufacturer's manual before
attempting to operate this equipment.
IMPORTANT! Read the sawmill operator’s manual and
engine manufacturer’s manual for instructions and safety
precautions before operating this equipment.
The information and instructions given in this manual do not amend or extend the limited
warranties for the equipment given at the time of purchase.
ENGINE COMPONENTS
Muffler
Radiator
Serial Number/Engine Type
Alternator
Oil Filter Starter
Motor

Operation
Starting The Engine
1
1-1 D4297doc062215 Operation
SECTION 1 OPERATION
1.1 Starting The Engine
Engine Control Lights
See Figure 1-1. The following indicator lights are located on the sawmill control panel.
Alternator Charge Indicator: Lights up if the alternator is not charging the battery.
Engine Temperature Indicator: Lights up if the engine is overheating. A circuit breaker
assembly in the engine harness will shut the engine off if the engine overheats. Turn the
key switch off and allow the engine to cool for a period of time before restarting. If the
overheating condition persists, stop operating the engine until the condition is corrected.
The engine will automatically switch to low idle if an overheating condition occurs.
Key Switch Indicator: Lights up when the key is in either the on or accessory (#1 or #3)
position.
Oil Indicator: Lights up if the oil pressure is too low. The engine will automatically switch to
low idle if a low oil condition occurs.
Glow Plug Indicator: Lights up after the key has been turned to the on (#1) position.
FIG. 1-1

Operation
Starting The Engine
Operation D4297doc062215 1-2
1
See Table 1-1. IMPORTANT! The glow plug sensing relay was replaced on LT30 Super
Rev. H9.07, LT40 Super Rev. J1.07, LT30HD Super Rev. J5.07 and LT40HD Super
Rev. J5.08 to provide manual control of glow plug operation. Previous revisions can be
modified to improve durability (see form #1151). See the table for recommended glow
plug on times.
NOTE: The glow plug light will stay on indefinitely when the key is in the pre-start (1) posi-
tion. The glow plug light will go out after the engine is started.
CAUTION! Avoid leaving the key in the pre-start (1) posi-
tion for more than 30 seconds while the engine is not run-
ning. Doing so will drain the sawmill battery which may
reduce its service life.
Engine Start
DANGER! Always be sure the blade is disengaged and all
persons are out of the path of the blade before starting the
engine. Failure to do so will result in serious injury.
DANGER! Operate your engine/machine only in well venti-
lated areas. The exhaust gases of your engine can cause
nausea, delirium and potentially death unless adequate
ventilation is present.
DANGER! Never operate an engine with a fuel or oil leak.
The leaking fuel or oil could potentially come in contact with
hot surfaces and ignite into flames.
WARNING! Be sure the power feed switch is in the neutral
position before turning the key switch to the on (#1) or
accessory (#3) position. This prevents accidental carriage
movement. which may cause serious injury or death.
WARNING! Do not operate engine without proper and
operational spark arrester/muffler. Sparks emitted from the
On Times For Manually Operated Glow Plugs
Ambient Temperature Suggested Glow Plug On Time
Less Than 32° F (0° C) 30 Seconds
32 - 60° F (0 -15° C) 25 Seconds
60 - 80° F (15 - 27° C) 15 Seconds
Above 80° F (27° C) 10 Seconds
TABLE 1-1

Operation
Starting The Engine
1
1-3 D4297doc062215 Operation
engine exhaust could ignite surrounding materials, causing
serious injury or death.
CAUTION! Do not crank starter for more than 7 seconds at
one time during starting attempts. Damage to the engine
may result.
CAUTION! Let engine idle for 2 minutes before applying
load to prevent engine damage.
1. See the engine manufacturer’s manual for lubricating oil recommendations for specific
temperature ranges.
2. Use #2 or better quality diesel fuel for above freezing starting. Use a #1 quality diesel fuel
for below freezing starting.
3. Turn the key switch on the control panel to the on (#1) position.
4. Wait the recommended glow plug on time (See TABLE 1-1)
5. Turn the key switch to the start (#2) position and release.
Engine Shutoff
CAUTION! A minimum 2 minute idle time is recommended
to allow the battery charge to recover before the engine is
shut off.
Turn the key switch to the off (#0) position.

Maintenance
Safety
Maintenance D4297doc062215 2-1
2
SECTION 2 MAINTENANCE
Refer to the manufacturer’s manual for maintenance intervals and procedures unless oth-
erwise instructed in this manual. Follow the manufacturer’s recommendations for dusty
conditions.
IMPORTANT! This manual only provides information about
additional procedures or procedures to be performed at dif-
ferent time intervals than found in the manufacturer's manu-
als. Refer to the manufacturer's manual for complete
maintenance instructions.
2.1 Safety
Use caution when performing maintenance or service to the engine.
DANGER! Always be aware of and take proper protective
measures against rotating shafts, pulleys, fans, etc. Always
stay a safe distance from rotating members and make sure
that loose clothing or long hair does not engage rotating
members resulting in possible injury.
DANGER! Engine components can become very hot during
operation. Avoid contact with any part of a hot engine. The
exhaust components of your engine are especially hot
during and following operation. Contact with hot engine
components can cause serious burns. Therefore, never
touch or perform service functions on a hot engine. Allow
the engine to cool sufficiently before beginning any service
function.
WARNING! Remove the blade before performing any
engine service. Failure to do so may result in serious injury.
WARNING! Always wear proper and necessary safety
equipment when performing service functions. Proper
safety equipment includes eye protection, breathing protec-
tion, hand protection and foot protection.
This symbol identifies the interval (hours of operation) at which each maintenance pro-
cedure should be performed. "AR" signifies maintenance procedures which should be
performed as required.
0

Maintenance
Cooling System
2
2-2 D4297doc062215 Maintenance
2.2 Cooling System
Clean the radiator fins every 8 hours of operation. Spray the radiator with water from a
hose or compressed air to clean sawdust from the radiator fins. Do not use a pressure
sprayer.
CAUTION! Failure to keep the radiator fins clear of sawdust
and/or dirt may cause the engine to overheat resulting in
damage to the engine.
8

Maintenance
Fuel Filter
Maintenance D4297doc062215 2-3
2
2.3 Fuel Filter
See Figure 2-1. Replace the primary fuel filter cartridge every 1500 hours or one year of
operation. After replacing the filter cartridge, loosen the air bleed screw and operate the
fuel pump bail until fuel begins to flow from the valve and is free of air bubbles. Tighten
the bleed screw. Inspect the water separator bowl periodically and drain the bowl as
required by turning the drain cap counterclockwise as viewed from the bottom.
FIG. 2-1
1500
Filter Cartridge
Water Drain
Bleed Screw
3H0463

Maintenance
Battery
2
2-4 D4297doc062215 Maintenance
2.4 Battery
Check the battery electrolyte level every 50 hours of operation. See manufacturer’s man-
ual for instructions.
DANGER! Batteries expel explosive gases. Keep sparks,
flames, burning cigarettes, or other ignition sources away at
all times. Always wear safety goggles and a face shield
when working near batteries. Failure to do so will cause
serious injury.1
WARNING! Battery posts, terminals and related accesso-
ries contain lead and lead compounds, chemicals known to
the State of California to cause cancer and reproductive
harm. Wash hands after handling.
1. Battery Council International, copyright 1987
50