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D42 Engine Safety, Operation, Maintenance & Parts Manual LT70S/M MH rev. C2.00 LT70S/M DH rev. C7.02 LT70L DH rev. B7.02 Safety is our #1 concern! Read and understand all safety information and instructions before operating, setting up or maintaining this machine.
Table of Contents Section-Page SECTION 1 OPERATION Starting The Engine................1-1 SECTION 2 MAINTENANCE Safety......................2-1 Cooling System ......................2-2 Air Filter & Pre-Cleaner................... 2-3 Engine Oil & Filter....................2-4 Fuel Filter ......................... 2-5 Battery ........................2-7 Alternator Belt .....................
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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.
Operation Starting The Engine SECTION 1 OPERATION Starting The 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.
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Operation Starting The Engine 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.
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Operation Starting The Engine 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. D42doc121820 Operation...
Maintenance Safety 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.
Maintenance Cooling System Cooling System Clean the radiator fins every 40 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.
Maintenance Air Filter & Pre-Cleaner Air Filter & Pre-Cleaner WARNING! Always wear proper and necessary safety equipment when performing service functions. Proper safety equipment includes eye protection, breathing protection, hand protection and foot protection. Service the pre-cleaner every four hours of operation. Service by gently shaking excess sawdust and debris from the foam piece.
Maintenance Engine Oil & Filter Engine Oil & Filter Check the oil level every 8 hours of operation. Add oil as necessary. See the engine manual for oil viscosity and grade recommendations. IMPORTANT! During initial break-in, change the oil and the oil filter after the first 50 hours and every 200 hours thereafter.
Maintenance Fuel Filter Fuel Filter See Figure 2-2. Replace the primary fuel filter and prefilter cartridge every 200 hours. After replacing any of the two filter cartridges, loosen the air bleed screw on the main filter and turn the key switch on the control panel to #1 position and wait until fuel begins to flow from the valve and is free of air bubbles.
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Maintenance Fuel Filter See Figure 2-3. Inspect the water separator bowl on the prefilter periodically and drain the bowl as required by turning the drain cap counterclockwise as viewed from the bot- tom. FIG. 2-3 D42doc070721 Maintenance...
Maintenance Battery 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.
Maintenance Alternator Belt Alternator Belt The belt tension should be checked after the first 100 hours of operation, when the bat- tery is not charging properly or when the alternator belt is squealing. If the battery contin- ues to not charge properly or the belt continues to squeal after the initial belt adjustment, replace the belt.
Maintenance Radiator Fan Belt Adjustment Radiator Fan Belt Adjustment The fan belt tension should be checked after the first 100 hours of operation, when the engine is overheating or when the fan belt is squealing. If the engine continues overheat- ing or the belt continues to squeal after the initial belt adjustment, replace the belt.
Maintenance RPM Adjustments RPM Adjustments WARNING! Remove the blade before performing any engine service. Failure to do so may result in serious injury. CAUTION! The engine RPM should be adjusted when the engine is warmed up to its working temperature. Check the RPM with a tachometer after the first 20 hours of operation and every 200 hours thereafter.
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Maintenance RPM Adjustments See Figure 2-6. Use the adjustments shown below to adjust the engine RPM (3000[±50] high-end, 1150[±50] idle). Left Adjustment Bolt Right Adjustment Bolt Turnbuckle FIG. 2-6 CAUTION! Do not adjust the high-end RPM above 3200. Doing so may cause damage to the engine. NOTE: When using the 097779 clutch (with reduced diam- eter) for hardwood cutting, adjust the high-end RPM at 2900.
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Maintenance RPM Adjustments See Figure 2-7. Upper Throttle Cable Mount Mounting Bolts Bracket Throttle Cable Throttle Cable Housing 3H0748-12 FIG. 2-7 CAUTION! Failure to properly center the throttle cable in the cable housing may result in premature cable wear. 2-12 D42doc070721 Maintenance...
Maintenance Centrifugal Clutches Maintenance 2.10 Centrifugal Clutches Maintenance Always shut off the engine and allow the sawmill to come to a complete stop before performing any engine service. Before replacing the extension springs clean the clutch with compressed air. The extension springs should be replaced every 250h of operation. Check the clutch linings and replace them if they are worn to a thickness smaller than 1.5 mm.
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Maintenance Centrifugal Clutches Maintenance The Seeger-L-circlip is slightly conical in shape and applies a degree of pressure on the plate. It must be fitted with the radial fingers of the cirlip pressing towars the cover ensur- ing at the same time that the circlip is fully seated in the hub groove. CAUTION! Clutches must be fully assembled with the drum in position and cover plated fastened before the driving...
Replacement Parts Fuel Tank SECTION 3 REPLACEMENT PARTS Fuel Tank DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # QTY. TANK FUEL ASSEMBLY, DIESEL LT70 518886 TRAY, TANK FUEL 518305-1 COVER, TANK 518303-1 WASHER, 8.4 FLAT ZINC F81054-1 WASHER 8,2 FE/ZN9 F81054-4 BOLT M8X16 -8.8-B-FE/ZN5 PN-85/M-82105 F81002-20...
Engine Mount Assembly Engine Mount Assembly 3H0902b DESCRIPTION (Indicates Parts Available In Assemblies Only) PART # QTY. MOUNT WELDMENT, REAR D42 ENGINE 097588-1 MOUNT WELDMENT, FRONT D42 ENGINE 089459-1 BOLT, M10X1.25X25-8.8-A HEX HEAD FULL THREAD ZINC F81003-29 WASHER, 10.2 ZINC SPLIT...
Replacement Parts Engine Guards Engine Guards DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # QTY. D42 ENGINE GUARDS 097596 Guard Weldment, Left Side Painted 097591-1 Guard Weldment, Right Side Painted 097593-1 Guard Weldment, Front Upper Painted 097597-1 Guard, Front Lower Painted...
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