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3-43 7. Hydraulic Valve Lifter 1. Replacement The hydraulic valve lifter can be replaced even when the engine is mounted on the vehicle as follows: 1. Disconnect both the blow-by and PCV hoses 2. Revove the valve rocker cover. 3. Using the special tool (Socket Wrench: 899988607), loosen the valve rocker ASSY and remove the push rod. 4. Raise the vehicle body with a jack and suppor it on a safety stand. 5. Remove the nuts which secure the front engine mounting and slightly raise the engine using a floor crane. 6. Remove the drain plug to drain the engine oil completely. Detach the oil pan. 7. Remove the hydraulic valve lifter. Use of a magnet facilitates removal. http://www.ultimatesubaru.org/forum/gallery/image/3767-ea81fig-3-45-a-5678/ Fig. 3-45 A5-678 8. The valve lifter can be installed in reverse order. 2. Adjustment 1. Perform adjustment in cold condition [coolant temperature 20 to 40 deg. C (68 deg. to 104 deg. F)]. 2. Retighten cylinder head nuts and bolts previously if necessary. 3. Adjust hydraulic valve lifter with the following procedures: a. Perform adjustment in two (2) sequences. Sequence (I) -------------------- Position #1 cylinder at TDC (compression), and adjust the valve lifters for intake and exhaust valves on #1 cylinder, for exhaust valve on #3 cylinder and for intake valve on #4 cylinder. Sequence (II)---------------- Position #2 cylinder at TDC (compression), and adjust all the others, i.e. for intake and exhaust valves on #2 cylinder, for intake valve on #3 cylinder and for exhaust valve on #4 cylinder. b. Raise up the bend of lock washer, loosen the lock nut, and then turn the valve rocker screw clockwise by approx. four (4) turns using Valve Clearance Adjuster 498767000. http://www.ultimatesubaru.org/forum/gallery/image/3768-ea81fig-3-46-a5-700/ Fig. 3-46 A-700 <Valve opens. Screw by approx 4 turns> c. Leave it with the valves opened for approx. 15 minutes. http://www.ultimatesubaru.org/forum/gallery/image/3769-ea81fig-3-47-a5-701/ Fig 3-47 A-701 <Leave for approx 15 minutes then pressure chamber volume becomes minimum. Valve moves to close a little.> d. Unscrew the valve rocker screw gradually. Then, the rocker arm stops moving due to the closing of valve. This condion is called "Zero Point". http://www.ultimatesubaru.org/forum/gallery/image/3770-ea81fig-3-48-a5-702/ Fig. 3-48 A5-702 <Valve closes Zero point Unscrew gradually> e. Moreover, unscrew the valve rocker screw counterclockwise by 1.5 turns http://www.ultimatesubaru.org/forum/gallery/image/3771-ea81fig-3-49-a5-703/ Fig. 3-49 <Hydralic valve lifter adjusted Unscrew by 1.5 turns> f. Tighen lock nut, and bend the lock washer.
Trying to assess my current '94 Loyale / 3AT situation, concerning the ticking sound which accompanies the generally rough sounding idle. Not a knocking but a tick, which i've been told is commonly referred to as "Lifter-Tick" or "the Tick of Death", and can be caused by a few different things. I'm getting help from another USMB member and fellow Loyale owner, @175eya, who said he eliminated his by swapping out his oil pump, but don't quote me on that, i think there was more to it than that. I've also heard simply using a particular type of oil treatment, not sure off the top of my head which one, and then using a heavier weight oil will more temporarily solve the problem. additionally, it's been suggested the valve covers need to be adjusted. i can live with the noise, but i'm looking to increase the performance of my little 90hp engine and more importantly, help save it from any potential damage i'm currently doing to it buy continuing to drive it while it's ticking. even being able to get it up to 70mph at 42k RPM, rather than 65 at the same RPM would make highway driving better, and i'm hoping that solving the ticking issue could help w/ that. thoughts? thanks, the generosity of knowledge and expertise i've experienced here on the USMB already has fantastic and i'm truly grateful.