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GENERAL INFORMATION AND MAINTENANCE 12. Open a container of new oil and smear some of this oil onto the rubber gasket of the new oil filter. Get a feel for where the filter post is and start the filter by hand until the gasket contacts the seat. Turn the filter an additional % turn with your hand. 13. Install the drain plug and metal gasket. Be sure that the plug is tight enough that the oil does not leak out, but not tight enough to strip the threads. Over time you will develop a sense of what the proper tightness of the drain plug is. If a torque wrench is available, tighten the plug to 18 ft. Ibs. (25 Nm). —Replace the drain plug gasket at every third or fourth oil change.
Fig. 137 Before installing a new oil filter, coat the rubber gaskei with clean oil dirty oil left remaining in the old oil filter if it is not changed! A few doll; every year seems a small price to pay for extended engine life—so chan filter every time you change the oil! The oil drain plug is located on the bottom, rear of the oil pan (botton engine, underneath the truck). The mileage figures given are the recommended intervals assuming n driving and conditions. If your truck is being used under dusty, polluted road conditions, change the oil and filter more frequently than specified same goes for trucks driven in stop-and-go traffic or only for short dista Always drain the oil after the engine has been running long enough to b normal operating temperature. Hot oil will flow easier and more contami will be removed along with the oil than if it were drained cold. To chang and filter:
more ethe
—If the engine is equipped with an oil cooler, this will also have drained, using the drain plug. Be sure to add enough oil to fill tin cooler in addition to the engine.
be
1. Warm the oil by running the engine for a short period of time or until the needle on the temperature gauge rises above the C mark. This v make the oil flow more freely from the oil pan. 2. Park on a level surface, apply the parking brake and block the wi 3. Stop the engine. Raise the hood and remove the oil filler cap fro top of the valve cover. This allows the air to enter the engine as the oil d Remove the dipstick, wipe it off and set it aside. 4. Position a suitable oil drain pan under the drain plug.
least
of the rmal r offhe es. ig it to nts he oil
14. Through a suitable plastic or metal funnel, add clean new oil of the proper grade and viscosity through the oil filler on the top of the valve cover. Be sure that the oil level registers near the (full) mark on the dipstick. 15. Install and tighten the oil filler cap. 16. Start the engine and allow it to run for several minutes. Check for leaks at the filter and drain plug. Sometimes leaks will not be revealed until the engine reaches normal operating temperature. 17. Stop the engine and recheckthe oil level. Add oil as necessary. When you have finished this job, you will notice that you now possess several quarts of dirty oil. The best thing to do with it is to pour it into plastic jugs, such as milk or anti-freeze containers. Then, find a gas station or service garage which accepts waste oil for recycling and dispose of it there.
Manual Transmission FLUID RECOMMENDATION • • • • •
Muncie 117mm: API GL-5, SAE80W-90 Getrag 85mm: Syncromesh Transmission Fluid NVG 4500: Castrol Syntorq GL-4 NVG 5LM60: Syncromesh Transmission Fluid NVG 3500: Syncromesh Transmission Fluid
LEVEL CHECK els. the ins.
—All diesel and gasoline engines hold approximately 5-8 quarts oil (give or take), so choose a drain pan that exceeds this amount to How for movement of the oil when the pan is pulled from under the ve cle. This will prevent time lost to the cleaning up of messy oil spills. 5. With the proper size socket or wrench (DO NOT use pliers or vis grips), loosen the drain plug. Back out the drain plug while maintaining a sligh pward force on it to keep the oil from running out around it (and your hand). A wthe oil to drain into the drain pan.
CAUTION
»See Figure 138 Check the lubricant level at least twice a year, even more frequently if driven in deep water. 1. With the truck parked on a level surface, remove the filler plug from the side of the transmission case. Be careful not to take out the drain plug at the bottom. 2. If lubricant begins to trickle out of the hole, there is enough. If not, carefully insert a finger (watch out for sharp threads) and check that the level is up to the edge of the hole. 3. If not, add sufficient lubricant with a funnel and tube, or a squeeze bulb to bring it to the proper level. You can also use a common kitchen baster. 4. Install the plug and tighten to 17 ft. Ibs. (23 Nm) on the Muncie and Getrag; 30 ft. Ibs. (40 Nm) on NVG 4500; and 44 ft. Ibs. (60 Nm) on the NVG 5LM60. Road test the truck and check for any leaks.
The engine oil will be hot. Keep your arms, face and hands away from the oil as it is draining. 6. Remove the drain pan and wipe any excess oil from the area arou d the hole using a clean rag. 7. Clean the threads of the drain plug and the drain plug gasket to re nove any sludge deposits that may have accumulated. 8. Place the drain pan under the oil filter location to prevent spilling any oil from the filter on to the ground. 9. With a filter wrench, loosen the oil filter counterclockwise and back the filter off the filter post the rest of the way by hand. Keep the filter end up so that the oil does not spill out. Tilt the filter into the drain pan to drain the oil. 10. Remove the drain pan from under the vehicle and position it off to the side. 11. With a clean rag, wipe off the filter seating surface to ensure a proi: er seal. Make sure that the old gasket is not stuck to the seating surface. If it s, remove it and thoroughly clean the seating surface of the old gasket mater al.
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Fig. 138 Use your finger to check the oil level in the manual transmission