Vehicle - Vibration Diagnostics
Bulletin No. T 87-104File in Group 0
Number 30
Corp. Ref. No. 710124
Date May '87
SUBJECT: VIBRATION DIAGNOSIS USING A REED TACHOMETER AND ROTATIONAL ORDER CHARTS
MODELS AFFECTED: 1986-1987 DE VILLE, FLEETWOOD, FLEETWOOD BROUGHAM, CIMARRON, AND 1987 ALLANTE
To aid in diagnosis of vibrations, Cadillac has developed rotational order charts. These charts combined with resonant reed tachometer provide a systematic method for diagnosing vibration conditions. Refer to Serviceman Bulletin T-86-4, Group 0 for background and use of reed tachometers. This bulletin includes rotational order charts for the following vehicles:
NOTE: RPM VS. MPH IS AN APPROXIMATION ONLY. THIS RELATIONSHIP MAY VARY FROM VEHICLE TO VEHICLE
OR UNDER DIFFERENT DRIVING CONDITIONS. THEREFORE, USE THE MPH SCALE FOR ROAD SPEED
SENSITIVE ITEMS (I.E. TIRES) AND USE THE RPM SCALE FOR ENGINE SPEED SENSITIVE ITEMS (I.E. GENERATOR, A/C COMPRESSOR, AIR PUMP, STEERING PUMP, WATER PUMP, AND CRANKSHAFT).
ROTATIONAL ORDER CHART
1986 CIMARRON WITH 2.0L ENGINE AND AUTOMATIC TRANSAXLE IN 3RD GEAR WITH TCC ENGAGED
1986 CIMARRON WITH 2.0L ENGINE AND 5 SPEED MANUAL TRANSAXLE:
ROTATIONAL ORDER CHART
1986 CIMARRON WITH 2.OL ENGINE AND 5 SPEED MANUAL TRANSAXLE
IN 5TH GEAR
1986 CIMARRON WITH 2.8L ENGINE AND AUTOMATIC TRANSAXLE:
ROTATIONAL ORDER CHART
1986 CIMARRON WITH 2.8L ENGINE AND AUTOMATIC TRANSAXLE
IN 3RD GEAR WITH TCC ENGAGED
1986 CIMARRON WITH 2.8L ENGINE AND 4 SPEED MANUAL TRANSAXLE:
ROTATIONAL ORDER CHART 1986 CIMARRON WITH 2.8L ENGINE AND 4 SPEED MANUAL TRANSAXLE IN 4TH GEAR
1986 AND 1987 DEVILLE AND FLEETWOOD WITH BASE SUSPENSION:
ROTATIONAL ORDER CHART
1986 AND 1987 DEVILLE AND FLEETWOOD WITH BASE SUSPENSION IN 4TH GEAR WITH TCC ENGAGED
1986 AND 1987 DEVILLE AND FLEETWOOD WITH TOURING SUSPENSION:
ROTATIONAL ORDER CHART
1986 AND 1987 DEVILLE AND FLEETWOOD WITH TOURING SUSPENSION IN 4TH GEAR WITH TCC ENGAGED
1986 AND 1987 ELDORADO AND SEVILLE:
ROTATIONAL ORDER CHART 1986 AND 1987 ELDORADO AND SEVILLE IN 4TH GEAR WITH TCC ENGAGED
1986 AND 1987 FLEETWOOD BROUGHAM:
ROTATIONAL ORDER CHART 1986 AND 1987 FLEETWOOD BROUGHAM IN 4TH GEAR WITH TCC ENGAGED
1987 FLEETWOOD BROUGHAM WITH TRAILER TOWING PACKAGE:
ROTATIONAL ORDER CHART
1987 FLEETWOOD BROUGHAM WITH TRAILER TOWING PACKAGE IN 4TH GEAR WITH TCC ENGAGED
1987 ALLANTE:
ROTATIONAL ORDER CHART 1987 ALLANTE
IN 4TH GEAR WITH TCC ENGAGED
1987 CIMARRON WITH AUTOMATIC TRANSAXLE:
ROTATIONAL ORDER CHART 1987 CIMARRON WITH AUTOMATIC TRANSAXLE IN 3RD GEAR WITH TCC ENGAGED
ROTATIONAL ORDER CHART
1986 CIMARRON WITH 2.0L ENGINE AND 5 SPEED MANUAL TRANSAXLE IN 5TH GEAR