The support plate is now mated with JIMS cam bearing installer (Photo 16) and the bearings are pressed in. The timing marks on the cams are matched up, (Photo 17) the secondary chain installed, going in the right direction, and the cams are pressed into the plate. (Photo 18).
Photo 16
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Photo 17
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This is a snap thanks to JIMS new installer, featured here. The "cup," as it's called, (it's the bridge-like press die) has one side slightly longer so that one cam can be started into its bearing and then the press ram moved to the center of the bridge to complete the operation. At this time the slave cam snap ring and the cam bearing retainer are re-installed. Before the support plate is re-installed the o-rings that seal the oil feed port (Photo 19) and the oil pump (Photo 20) should be replaced. A light film of engine oil should be applied to the o-rings before installation. This is also a perfect time to replace the inner INA cam bearings with "full compliment" needle bearings.
Photo 18
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Photo 19
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The support plate and cam assembly is now fitted back into place. Replace the six Allen blots that secure the support plate and tighten them to 90-120 inch pounds. The torque sequence for this operation starts with the lower rear then goes to the middle front, the upper rear, the lower front, the middle rear and the upper front. Insert the oil pump bolts and turn them in until they just contact the plate face. Them, while turning the engine, so that the pump can find its natural center, snug them down. Tighten them down, in the order stamped in the plate, to 90-120 inch pounds. The secondary chain tensioner retaining pin can now be carefully removed, allowing the tensioner to rest against the secondary chain. Squeeze the tabs of the forward cam chain follower and re-install at this time. Replace the primary cam spacer (Photo 21) if you are using the stock gear, or, if, as in our case, you're using an Andrews cam set where the gear and spacer are one leave it off. If you're installing an aftermarket cam set it is necessary at this time to check the alignment of the primary and crank sprockets. This is done by laying a straight edge across the face of both sprockets, then checking to make sure that there is no more that a .005 of an inch difference. If there is, it will be necessary to shim the cam sprocket. Once this is accomplished the sprockets and chain can be installed, taking care that the chain is going in the right direction. Using JIMS sprocket locking tool tighten the cam and crank bolts to 24 foot pounds. Remove the locking tool, relieve the tension on the tensioner retaining pin, remove it and lower the tensioner until it rests on the chain. The cam cover is now replaced, using a new gasket, the cover bolts we set aside are installed now and torqued down to 90-120 inch pounds. The sequence numbering starts with number one at the rear of the rear lifer boss and go counter clockwise starting first with 1, 9, 5, 3, 2, 8, 10, 4, 6, and 7.
Photo 20
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Photo 21
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Pushrod adjustment for the Hydrosolids is somewhat different than other tappets. The pushrods are lengthened to a point of "no-lash," that is, until the rods can be turned with a light drag. The rods are them lengthened one turn to compress the tappet seat. After waiting several minutes, about 3, the oil has been forced from the tappet body, and we're ready to proceed. The pushrod is shortened, and then lengthened to a point of "no-lash." It is then slowly lengthened until the rod has enough drag so that it can barely be spun using two fingers and the thumb. The jam nut is tightened, (Photo 25) and you're done. The other push rod is adjusted the same way, the pushrod tubes are seated and secured, and you're on to the rear cylinder. The rear cylinder adjustment is identical to the front.
Photo 22
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Photo 23
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Clean up, fire up, check for leaks, and we sent Paul down the road for the only true test of this kind of install, the seat test. If the seat pushes you harder that it did, the operation is a success, and from the look on Paul's face this one was. Well, this bikernet.com weekend is going down in the books as a good one, so we look forward to our next tech, and hope you'll keep checking the bikernet.com site for more hot stuff and great fun. All right, last one to Tacoville buys!
Photo 24
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Photo 25
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