New cylinders sump report
#21
10-07-2018, 10:27 AM
Road Warrior
Did you replace the inner cam bearing when you installed the cam? If so, did you ensure ALL needles in the bearing were accounted for? I ask for a very specific reason, and that is we have seen at least 2 members here where the needle falls into the engine as a result of the puller not being fully seated when removing the bearing, leaving needles behind.
#22
10-07-2018, 10:34 AM
Did you replace the inner cam bearing when you installed the cam? If so, did you ensure ALL needles in the bearing were accounted for? I ask for a very specific reason, and that is we have seen at least 2 members here where the needle falls into the engine as a result of the puller not being fully seated when removing the bearing, leaving needles behind.
The big question is split the case or flush
#23
10-07-2018, 10:58 AM
Elite HDF Member
#24
10-07-2018, 11:03 AM
#25
10-07-2018, 11:12 AM
It looks like something hard went through your pump. The two most common items that go through an M8 pump are a piston jet screw and an inner cam bearing needle.
Did you replace the inner cam bearing? If you did, can you check the old bearing for any missing needles, one or more? An inner cam bearing puller sometimes damages the cam bearing during extraction, and one or more needles can fall into the flywheel cavity, eventually getting sucked into the pump.
Also, the proper torque for the piston jet screw is 27-33 in-lbs. and not the approximate 22 in-lbs. that was listed in early M8 service manuals. The M1450 service bulletin lists the correct piston jet torque specs.
It’s also possible that some hard item(s) accidentally fell into the flywheel cavity during engine assembly.
If you suspect more stray items may be located in the flywheel cavity, you can remove a cylinder, use a magnet to catch the item, and then flush the case.
Did you replace the inner cam bearing? If you did, can you check the old bearing for any missing needles, one or more? An inner cam bearing puller sometimes damages the cam bearing during extraction, and one or more needles can fall into the flywheel cavity, eventually getting sucked into the pump.
Also, the proper torque for the piston jet screw is 27-33 in-lbs. and not the approximate 22 in-lbs. that was listed in early M8 service manuals. The M1450 service bulletin lists the correct piston jet torque specs.
It’s also possible that some hard item(s) accidentally fell into the flywheel cavity during engine assembly.
If you suspect more stray items may be located in the flywheel cavity, you can remove a cylinder, use a magnet to catch the item, and then flush the case.
#26
10-07-2018, 11:19 AM
Elite HDF Member
The following users liked this post:
GREENOHAWK69 (10-08-2018)
#27
10-07-2018, 11:26 AM
It looks like something hard went through your pump. The two most common items that go through an M8 pump are a piston jet screw and an inner cam bearing needle.
Did you replace the inner cam bearing? If you did, can you check the old bearing for any missing needles, one or more? An inner cam bearing puller sometimes damages the cam bearing during extraction, and one or more needles can fall into the flywheel cavity, eventually getting sucked into the pump.
Also, the proper torque for the piston jet screw is 27-33 in-lbs. and not the approximate 22 in-lbs. that was listed in early M8 service manuals. The M1450 service bulletin lists the correct piston jet torque specs.
It’s also possible that some hard item(s) accidentally fell into the flywheel cavity during engine assembly.
If you suspect more stray items may be located in the flywheel cavity, you can remove a cylinder, use a magnet to catch the item, and then flush the case.
Did you replace the inner cam bearing? If you did, can you check the old bearing for any missing needles, one or more? An inner cam bearing puller sometimes damages the cam bearing during extraction, and one or more needles can fall into the flywheel cavity, eventually getting sucked into the pump.
Also, the proper torque for the piston jet screw is 27-33 in-lbs. and not the approximate 22 in-lbs. that was listed in early M8 service manuals. The M1450 service bulletin lists the correct piston jet torque specs.
It’s also possible that some hard item(s) accidentally fell into the flywheel cavity during engine assembly.
If you suspect more stray items may be located in the flywheel cavity, you can remove a cylinder, use a magnet to catch the item, and then flush the case.
#28
10-07-2018, 11:28 AM
#29
10-07-2018, 11:30 AM
Elite HDF Member
#30
10-07-2018, 11:42 AM