From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Quarterly report of complaints for the Phantom 21 chassis for December 1936.
Identifier | ExFiles\Box 146\2\ scan0056 | |
Date | 31th December 1936 | |
RM{William Robotham - Chief Engineer} QUARTERLY COMPLAINTS - PHANTOM 21 CHASSIS - DECEMBER 1936 1.SELF ADJUSTING TAPPET MECHANISM CAUSES MISFIRE. December quarter C.C. 2 C.P. 1 ------- 3 ------- 3.AZ.110 - 6.852 kms.-- Certain valves prevented from closing causing misfire on pick up. 3.AZ. 20 - Repetition complaint as above plus difficulty in starting up when cold. 3.AZ.212 - new car -Entirely dismantled self adjusting tappet mechanism & increased the diametrical clearance between the plungers & casings. In some cases we found the dia. clearances to be less than .001" we increased the diametrical clearance to .0015". Judging from our experience up to the present we would say that if the dia. clearance between the plungers & the casings are less than .0015" then trouble as above will most likely occur. Special attention should be given to clearances. This is a very trouble some complaint. 2. SELF ADJUSTING TAPPET MECHANISM LACK OF OIL TO SAME. December quarter C.C. 1 C.P. ------- 1 ------- 3.AZ.140 - 3215 kms-- Ends of rockers & push rods (at top end) in rusty condition owing to non arrival of oil oil filter found to be chocked up with sludge. Dismant-led rocker shaft etc., & cleaned & oiled same. When car was nearly new we drained Prices oil from engine & filled up same with Castrol XL. We did not remove the oil filters, 3. WATER PUMP NOISY. December quarter C.C. 2 C.P. ------- 2 ------- 3.AZ.166 - 611 Kms.- Fitted new water pump.Reconditioned original pump as follows: Made & fitted new centre bush in W/M.{Mr Moon / Mr Moore} Fitted new thrust plug & packings. The rotor was found to be fouling the casing sides of the pump due to end play. 3.AZ. 20 - Approx.1000 kms.- Fitted new pump,returned original to Works. 4. IGNITION MISFIRE. December quarter C.C. 1 C.P. ------- 1 ------- 3.AZ.110 - 3450 kms.- Cleaned & reset plugs. | ||