Distributor Not Seating

[Boaf 32]

Here is a picture of my dizzy. you do need to squeeze that gap closed with some leverage. First pinch with pliers before putting the ring on the Dizzy.

Then install as you normally do. Remove the cap and rotor (if not already done) and place a small Block of wood on top for leverage (get a helper) and then tighten. That gap is too big. Hope that helps.

Note that there are 2 different collars, I believe you have the thicker one but should look like the picture I have above, you can see th taper on the top of the upper collar. I went through the same process. Call CruiserParts.net, they can help. https://shop.cruiserparts.net/index.php?main_page=index&zenid=bfb284df10fc08f9f54459c394cfaffc

 

[Steamer]

you do need to squeeze that gap closed with some leverage

I’m curious where that method comes from. It seems it would lead to excessive wear on bearings/bushings and the dizzy & cam gears. I've never had to use any force to insert a dizzy. Maybe a dry or oversized O-ring could cause resistance but I think you'd feel that before hitting the slot.

 

[Boaf 32]

I’m curious where that method comes from. It seems it would lead to excessive wear on bearings/bushings and the dizzy & cam gears. I've never had to use any force to insert a dizzy. Maybe a dry or oversized O-ring could cause resistance but I think you'd feel that before hitting the slot.

Someone said use the BFH method and did not do that. The wood block just saved my hand from the Rotor shaft imprint (like the Raiders of the Lost Arc Medallion imprint.

 

[fj40ingkc]

Well I measured the difference between the distributor when rotated a couple of teeth out of the slot and when lined up correctlya, both after tapping down into the block until the tapping with brass changed to a solid sound. awhat i found is the distributor is bottoming out on the oil pump upper shaft hole where the distributor shaft and screw driver tip go into the pump,,, given that i measured The gap difference and it goes from 19mm when intentionally misaligned to the pump slot but down fully, to 2.4mm when aligned correctlyd. (i measured from tip of shaft to the shaft shoulder on distributor casing, not the variable locking collar)

Keep in mind The tip of the distributor to the edge of shaft is approx 15mm. So it’s seating pretty much fully into the pump. The only issue is Gap is still there, enough to not engage the locking collar on the distributor on bottom side of collar, so I loosened oil pump bolts Incase its installed high somehow, installed distributor and tapped with brass all the way down. No change in gap. Maybe the oil tube to oil pump is keeping it from moving by is internal and. Can’t tell. a

i pulled pan back off and checked against the extra aisin oem pump i had on shelf. they measure identically, only difference between the new pumps one toyota bought and one rockauto is the TEQ logo was ground off. atleast i know it isnt the pump. maybe there is a variable gap and not all are the same as this distributor is fully seated. only issue im worried about is the locking pinned collar below distributor gear to camshaft gear sits onthe shoulder of the oil pump shaft. since this is a non bearing surface i could see excessive wear until it creates a bit of clearance. When looking at the gear engagement to camshaft it does look correct and on center as best i can tell. when i fully push distributor into block where collar on shaft engages with the block, the gear seems to be to far below camshaft gear and not centered on axis very well. (this can be seen when oil pump is removed entirely. well im fairly satisfied with this result and dont know if it can be improved. time to move foward

 

[island45]

I have the exact situatrion issue as FJ40ingkc. '79 2f. Dizzy may be an SOR non Usa I bought 30 years ago or coulda mixed things up over the years having had at least ten 40 series over the years. Been enjoying the smooth running since battling a idle issue two weeks ago. So in the interest of good maintanence I popped the cap and it looked quite filthy inside so decided a good Saturday project was at hand. Pull dizzy and find the shaft is very gummed up. I could turn the gear but not spin it with my fingers. Ick. Freed right up with carb cleaner in the hole and then pb blaster. Not too keen on a good nickel sized gap of endplay seen at gear, but no sideplay. As I said, truck was running excellent in all respects. I spent 2 hours removing parts, cleaning up and making everything pretty, polished and set points and put it back in, well most of the way in.... I do know I'm the last one who 'seated' that dizzy, but no idea how many years ago. Repeated all the usual steps trying to get that last 1/4" of drop needed. This is not my first rodeo with these things, so I used all the usual tricks.'. Finally I looked down the hole to the oil pump and see a wear ring in the top of pump remarkably similar in size to the shoulder below the drive gear. Bright and shiney, no mistaking. Careful measuring shows with the clamp set onto the dizzy the shoulder does indeed ride (wear) on the fixed top of the oil pump. As seen in the photo the tang has been engaged about 1/4" into the slot and apparently that's enough (so far), as it maintains 70 lb oil pressure day in/day out. Of course I wanna keep it that way. I am tempted to take the gear off and remove that last pesky 1/4" off the shoulder, but...... Gonna search for more Japanese swear words while I wait for advice.

 

[island45]

I'm gonna go with 'This is that SOR non-usa dizzy I bought 30 years ago'. Therefore it was made to use with the tall, hat shaped old style clamp. ?? The reason it appears unseated is because as noted, the new style clamp that came on my '79 is of a different design and shorter. Can someone tell me if the wear where the bottom of drive gear rides on the casting is normal? Also, does the cam gear/dizzy gear interface impart an upward or downward force on the shaft? I ask because the shaft has been wearing on the underside of the breaker plate as evidenced by a shine and some 'glitter' in the vicinity. And yes I have searched posts for hours.