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techtalk:evo:oil03h [2018/12/21 05:24] hippysmack [Gasket Removal] |
techtalk:evo:oil03h [2018/12/21 21:00] hippysmack [Disassembly] |
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So, it is common for the cover to be stuck to the pump body. \\ | So, it is common for the cover to be stuck to the pump body. \\ | ||
- | According to the FSM, the pump to case mounting gasket should be coated with gasket sealer before installation. \\ | + | As mentioned above, the pump to case mounting gasket may be coated with gasket sealer. \\ |
This is a debatable procedure as many have reported that is not necessary. \\ | This is a debatable procedure as many have reported that is not necessary. \\ | ||
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|{{:techtalk:ref:tools:parts_cleaner_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:tools:parts_cleaner_2_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ref:tools:parts_cleaner_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:tools:parts_cleaner_2_by_hippysmack.jpg?direct&300|}}| | ||
- | |{{:techtalk:ih:oil:77-e83_oil_pump_5.2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-e83_oil_pump_5.3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-e83_oil_pump_5.1_by_hippysmack.jpg?direct&300|}}| | + | |
====== Disassembly ====== | ====== Disassembly ====== | ||
+ | Wiggle the cover off and the feed gerotors are exposed. \\ | ||
+ | Once you've gotten the cover off, you can continue to disassemble the pump from here. ((photos by Hippysmack)) \\ | ||
- | |Wiggle the cover off and the feed gerotors are exposed | + | Holding the pump upside down will allow you to remove and inspect parts individually as you go. \\ |
+ | It also helps to keep from dropping and losing some of the small parts. \\ | ||
+ | |||
+ | Inspect the parts for damage and wear while removing them. \\ | ||
+ | This can help diagnose certain areas for further inspection that might otherwise be looked over. \\ | ||
+ | |||
+ | * Check for excessive scratching of the cover where the feed gerotors sit as well as the top and bottom of the feed gerotors. | ||
+ | * The feed gerotors are normally 'sandwiched' in place between the outer plate and the cover. | ||
+ | * When the cover comes off, they can be slid off the gearshaft. | ||
+ | * The pin in the gearshaft sticks out into the square recess in the inner gear but doesn't hold the gerotors in place. | ||
+ | * The outer plate is held in place by a solid pin in the gearshaft. \\ | ||
+ | * It's a loose fit in the hole in the gearshaft and it's held in place by tension of the spring washer between the plates. | ||
|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_4_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:86-90_oil_pump_disassembly_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_4_by_hippysmack.jpg?direct&300|}}| | ||
+ | |||
+ | * Push in on the outer plate (if needed) to compress the spring and the pin can be removed with pliers or your fingers. | ||
+ | * Then the outer plate can be removed. | ||
+ | * The notch in the plate mates around the roll pin in the body that keeps it from rotating. | ||
+ | * It'll have to be lifted straight out or dumped out. | ||
+ | * Check the position and condition of the outer plate seal before removing it. | ||
+ | * It is pressed into the outer plate. | ||
+ | * Check the fit around the gearshaft. It should be a snug fit and sitting horizontal to the gearshaft. | ||
+ | * If not, this could easily contributed to wet-sumping in the engine. | ||
+ | * Then remove the spring washer. | ||
+ | * The inner plate is held in by the retaining ring. | ||
|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_5_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_6_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_7_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:86-90_oil_pump_disassembly_5_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_6_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_7_by_hippysmack.jpg?direct&300|}}| | ||
+ | |||
+ | * The outer plate seal will need to be pressed or pried out. | ||
+ | * You can set up a rig as in below (bearing race, a small socket and a rubber hammer). | ||
+ | * Make sure the socket is slightly smaller than the outer plate I.D. | ||
+ | * Gently tap the socket. | ||
+ | * And the seal will fall thru the bearing race (or larger socket etc). | ||
+ | |||
+ | |{{:techtalk:evo:oil:83-90_outer_plate_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:83-90_outer_plate_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:83-90_outer_plate_5_by_hippysmack.jpg?direct&300|}}| | ||
+ | |||
+ | * Two small drivers were used here (1 to keep the ring from spinning, 1 to raise an end out of the groove in the gearshaft). | ||
+ | * The 1st screwdriver can be pushed into the slot in the gerotor to keep the ring from spinning. | ||
+ | * This will allow you to pick and out on one end and then switch back and forth between the two from there. | ||
+ | * Remove the retainer clip. | ||
+ | * Then pull out the inner plate. | ||
|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_8_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_9_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_10_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:86-90_oil_pump_disassembly_8_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_9_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_10_by_hippysmack.jpg?direct&300|}}| | ||
+ | |||
+ | * Inspect the roll pin in the pump body for straightness and damage. | ||
+ | * The return gerotors are also normally 'sandwiched' between the inner plate and the pump body. | ||
+ | * Turn the pump over and dump them out enough to get your fingers on them. \\ (being careful not to loose the second pin in the gearshaft) | ||
+ | * Inspect the area at the pump bore where the pin contacts it for damage. \\ | ||
+ | * Also, make sure the pin is sitting on the outside of the bore surface instead of inside the bore. \\ | ||
+ | * The second pin holds and keeps the gearshaft from coming out. | ||
+ | * Use a pair of needle nose pliers to remove it from the gearshaft. | ||
+ | * Hold the gearshaft with the other hand to keep it from falling when pulling this pin. | ||
+ | * Else, it could fall out and damage the teeth on the gear. | ||
+ | * Inspect the return gerotors and their mating surface in the pump body for scratches / damage. \\ | ||
|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_11_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_12_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_13_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:86-90_oil_pump_disassembly_11_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_12_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_13_by_hippysmack.jpg?direct&300|}}| | ||
+ | |||
+ | |||
+ | * Remove the gearshaft and set it in a safe place to protect the gear teeth. | ||
+ | * Clean all parts with solvent (brake cleaner works well). | ||
+ | * With the parts spread out you now can now do further inspection on areas noticed while disassembling. | ||
|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_16_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_17_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_14_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:86-90_oil_pump_disassembly_16_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_17_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_14_by_hippysmack.jpg?direct&300|}}| |