Valve Adjustment Guide
Gathered by FriarJohn for the BonnevilleAmerica.com Tech Vault:
- Micrometer with .001mm resolution (I paid $116 for a Fowler)
- Metric Feeler Gauges
- Torque Wrench that measures Nm and goes below 8Nm (I paid $170 for a Craftsman Professional micro torque wrench)
- Misc metric sockets, wrenches, T-30 Torx bit/socket (you might need more than one – some of the bolts can be tough to loosen and you might break one or two bits)
- Tool set, wrench and locking pins T3880330, price ranges $44-75 (optional? some have used nails or fabricated their own pins to secure the sprocket tensioners)
- New cam cover gasket (1) T1260900
- Cam cover sealing washers (4) T1260209
- Crush washer for oil feed tube (2) 3550042-T0301
- Oil feed tube o-ring (1) T3600077
- Oil feed tube banjo bolts (optional, but they snap very easily so if you’re a klutz like me, order a couple) T1211456
- Shims, $6-11 each (you won’t know what you need until you get deep in the process)
- Dinqua’s shim calculator (.exe)
- Yamaha V-Max shims are the same diameter, 25mm (in case you don’t have a Triumph dealership close)
- If you’ve got the time, post your shim needs in the Classifieds forum and see if other members have the shims you need (see notes, below)
- Valve Clearances in Factory Manual
- Intake: 0.15mm-0.20mm
- Exhaust: 0.25mm-0.30mm
Factory Adjustment Interval: 12,000mi
Torque Specs from the Manual
- Camshaft cover to cylinder head bolds: 10Nm
- Camshaft bearing caps to head bolts: 10Nm (these are fragile, too – if you break one they are M6x40 1.00 pitch)
- Camshaft oil feed pipe to bearing cap bolts: 8Nm (these banjo bolts are VERY FRAGILE so BE CAREFUL)
- Fuel tank mounting bolts: 19Nm
- Front seat to mudguard fixing: 26Nm
- Rear seat to mudguard fixing: 10Nm
Here’s the ‘Readers Digest’ version of the work involved. (Thanks Greybeard)
- Remove the battery cover and disconnect the battery.
- Remove the seat(s). (to get at the tank bolt)
- Remove the fuel tank.
- Remove the cam cover.
- Turn the engine 2 full revolutions, stopping each 1/4 turn to check the valves and noting the clearance.
- Remove the cams if the valves need adjusting.
- Remove the shims as needed.
- Inspect the shims for wear and measure the true thickness.
- Calculate the required 1000th thickness.
- Install the new shims.
- Reinstall the cams.
- Turn the engine over by 1/4′s again to make sure of the adjustment.**
- Reassemble the bike.
- Start it up and warm up the engine, checking for noise and leaks.**
- Take a test ride.**
- Anything wrong at these points means doing it all over again, usually for free.
- Tight valves will burn in short order. Very loose valves will eventually pound the cam faces and valve stems out of shape. (Greybeard)
- Before you run out and buy all new shims, run the numbers with Dinqua’s calculator and see if you reuse some of the old ones in other locations.
- Up until now I’ve never thought of this, but those of us who don’t do our own valve adjustments should ask for our old shims back when taking the bike to a dealer to get this done. I know I was charged something like $7.xx for each shim they replaced, and they kept the ones they took out. You have every right to ask for the old shims if you’re being charged for new ones. If we get enough people getting their old shims back, we can send them them off to whoever(Pat?), and it wouldn’t take long before we’d have a ample supply of every size shim needed. Then Pat, or whoever, could send out the correct size shims to those who need them. (SalMaglie)
Exhaust vs. Intake Camshaft
- If you mix up the camshafts, you will damage your valves. Do not underestimate how fragile all these bits are. There is an easy way to tell the difference and it isn’t by markings on the sprockets. In the middle of the camshaft there is a raised boss that is either smooth (exhaust) or has a groove cast into it (intake). There is a picture in the manual; I’ll try to scan and upload it.
Thread Links (on BonnevilleAmerica.com)
- Confirm Valve Shim Needs
- Shim Kits available?
- Valve Shims needed
- valve adjustment, dealer hours, shim question
- have you seen this on shim replacement
- Pat’s Valve Shim Calculator?
- valve adj
- 1st valve check
- Valve Adjustment complete….with leftover shims
- Shimless Dealer
- Valve adjustment / clearance check (with pictures)
Valve Replacement Shopping List
All prices bikebandit.com. Total approximately $235.53
- Exhaust Pipe sealing ring: 2, 5570763-001, $5.78 each $11.56
- Head Gasket: 1, 5565582-001, $32.14 $32.14
- Exhaust Valve: 2, 5565250-001, $39.60 each $79.20
- Intake Valve: 2, 5565249-001, $26.78 each $53.56
- Valve Stem Seal: 4, 559085-001, $10.11 each $40.44
- Torx head screw – cam bearing cap: 4, 5576269-001, $1.52 each $6.08
- Vent pipe O-ring: 2, 5576932-001, $1.61 each $3.22
- Cam Tensioner gasket: 1, 5565446-001, $1.80 Each $1.80
- Cam chain blade tensioner copper washer: 1, 5576680-001, $.87 each $.87
- Copper sealing washer (Oil cooler): 4, 5576684-001, $.85 each $3.40
- Rear oil line fitting copper washers (rear oil line): 2, 5559056-001, $.73 each $1.46
- Side Cover gasket