21532612 Volvo.Penta Flexible coupling

Walk-Around Inspection
For maximum service life of your engine, thoroughly inspect the installation before starting the engine. Look for such items as fuel, oil or coolant leaks, loose bolts, worn belts and trash build-up. Keep the engine area clean. Remove trash build-up and have repairs made as needed. Perform required Daily and other periodic maintenance before starting the engine. Refer to the Maintenance Schedule and Daily maintenance recommendations in this Manual for details.
All valves in fuel return lines must be open before and during engine operation to prevent high fuel pressure. High fuel pressure may cause filter housing failure or other damage.Each time any significant quantity of oil (or other fluid) is spilled on or near the engine it should be cleaned up. Accumulated grease and oil on an engine or platform is a fire hazard. Remove this debris with steam cleaning or high pressure water, at least every 1000 hours or each time any significant quantity of oil (or other fluid) is spilled on or near an engine and working area.Wipe clean all fittings, caps and plugs before servicing.
Pre-Start Checks
Do not start the engine or move any of the controls if there is a DO NOT OPERATE or similar warning tag attached to the start switch or controls. The operator must be satisfied that no one will be endangered before starting the engine. All guards must be in place. Repair or replace all guards that are damaged or missing.Starting Information
Above 12°C (55°F)
Diesel engine exhaust contains products of combustion which may be harmful to your health. Start and operate the engine in a well-ventilated area and, if in an enclosed area, ensure exhaust is vented outside and piping is connected properly.
For initial start-up of a new or rebuilt engine, make provision to shut down the engine should a runaway (overspeed) occur. This may be accomplished by cutting off the air and/or fuel supply to the engine.
Do not start the engine or move any of the controls if there is a DO NOT OPERATE or similar warning tag attached to the start switch or controls. The operator must be satisfied that no one will be endangered before and when starting the engine.If the engine has not been run for several weeks, fuel may have drained and allowed air into the filter housing. Also, when fuel filters have been changed, some air space will be left in the housing. In these instances, prime the fuel system. Refer to Priming the Fuel System in this publication for more information.Cold Weather Starting Aids
When using starting fluid, use it sparingly and spray it only while cranking the engine. Use ether for cold starting purposes only. Failure to do so, could result in an explosion and/or fire and possible personal injury.
Heating of jacket water (coolant) and crankcase oil may be required to assist starting in temperatures below 12°C (55°F). Startability will be improved at temperatures below 12°C (55°F) by the use of the jacket water (coolant) heater.
Caterpillar engines are designed to start at temperatures above 12°C (55°F) without using starting aids. Engine jacket water heaters (optional) can be provided to maintain the minimum temperature when the engine is not running. Maintain 32°C (90°F) coolant temperature in block at all times.An additional air tank volume and/or higher pressure for air starting systems, or an extra battery capacity for electric starting, may be required to start the engine at colder temperatures.For temperatures below -23°C (-10°F), consult your Caterpillar dealer.For starting below -18°C (0°F), consult your Caterpillar dealer. If a potential for lower starting temperature exists, consult your Caterpillar dealer. Contact your Caterpillar dealer before installing a dipstick crankcase oil heater. Oil pan immersion heaters are not recommended for crankcase oil heating. Refer to the Safety section regarding ether and other starting aids. Crank Terminate Latch Circuit
Cranking Timers- There are programmable cranking timers used in the GSC. One setting allows the engine to crank for 30 seconds, and the other cranks the engine for 10 seconds, rests the starting motor for 10 seconds, up to five successive starting attempts. If the engine will not start during that period, the fuel rack will shut off and an overcrank fault indicator light will illuminate to indicate a starting failure.If the ECS (Engine Control Switch) is in the AUTOMATIC or MAN. START position, the overcrank latching contacts remain energized until the ECS is turned to the OFF/RESET position. This prevents the starting motors from re-engaging if the engine runs out of fuel, stops due to overloading, or if the magnetic pickup (MPU) signal wire is disconnected.Once the engine has successfully started, the starting motors do not need to again be re-engaged. Preventing the starting motors from re-engaging is one of the tasks of the Crank Terminate Relay (CTR).Electric Starting (If Equipped)
Disconnect any battery chargers that are not protected against the high current drain created when the electric starting motor engages.Do not engage starting motor when flywheel is turning.Do not start engine under load.Do not crank the engine for more than 30 seconds. If engine fails to start within 30 seconds, allow 2 minutes for the starting motor to cool before cranking again. If oil pressure does not rise within 10 seconds after the engine starts, stop the engine and make necessary corrections.
There is one standard and two optional electric starting motors that can be used with these engines. The starting motors will require 24 VDC starting voltage. One starting motor is specified for 12°C (55°F) and above ambient temperature and the others are for -12 to 12°C (10 to 55°F) by the customer.Air Starting (If Equipped)
Perform all of the Electric Starting preliminary checks.1. Open and close the drain valve on the bottom of the air tank to drain condensation and lube fluid carryover. 2. Check the air supply pressure. The air starting motors require a minimum of 690 kPa (100 psi) air pressure to operate properly. The maximum air pressure must not exceed 1550 kPa (225 psi). The normal air pressure will be 758 kPa (110 psi)