Rolls-Royce 25-30 H.P Handbook
HANDBOOK
FOR
25-30 H.P.
ROLLS-ROYCE CAR
CHASSIS SERIES
(In order of Issue)
GUL GRM GAN GRO GRP GAR
GYL GXM GWN GHO GMP GGR
GHL GGM GUN GMO GLP GZR
Liable to alteration without notice
PRICE £1. 5. 0
PUBLISHED BY
ROLLS-ROYCE, LIMITED
DER BY, CREWE,
AND AT 1 4 AND 15, CONDU IT STREET, LONDON
CONDENSED E D I T I ON
NO. XVII
Front Axle Control
Front Hydraulic
Damper
Dynamo
Carburetter
Crankcase Oil Filter
Chassis Oil Pump
Starter Motor Pinion
Housing
Clutch Pit Inspection
Cover
Servo Motor
Grouped Instruments
Universal Joint
Foot Brake Equaliser
Brake Rods
Brake Ropes
Spring Gaiter
Universal Joint
Rear Axle Filling
Plug
Fuel Tank Filler
Fig.1. - Plan View of Chassis.
Front Brake
Adjustment
Steering Pivot
Cross Steering Tube
Side Steering Tube
Carburetter Air
Silencer
Steering Box
Distribution Box and
Output Regulator
Fuel Pumps
Speedometer Drive
Accelerator Pedal
Starter Switch
Switch Box
Hand Brake Lever
Gear Lever
Strangler Control
Ignition Control
Throttle Control
Hand Brake
Equaliser
Rear Hydraulic
Damper
Battery
Rear Brake
Adjustment
Fuel Gauge Unit
ROLLS-ROYCE LIMITED.
Londo n Off ice a nd Showroom :
14 & 15, CO ND UI T STREE T, LONDON, W.
TEL EGRAMS : “RO LHEA D REG . LO NDON.”
TEL EPHONE S: MAYFA IR 62 01 ( 7 line s)
COD ES USE D: A B C (5 TH EDI TION) , BE NTLEY ’S, MARCON I
MOT OR T RADE , WEST ERN U NION
Mai n Ser vice Stati on:
Hythe Road, Willesden, London N .W. 10
TEL EGRAM S: “ SILVAGOST, WESPH ONE, LONDO N”
TEL EPHON E: L ADBRO KE 24 44
Cre we Re pair Depôt :
Pym’s Lane, Crewe
TEL EGRAM S: “ ROYCR U, CR EWE”
TEL EPHON E: C REWE 3271 (10 LINES )
Aut horis ed Pa ris S ervic e Sta tion:
Franco-Britannic Autos Lt d.
25 Rue Paul Vaillant Couturier, Levallois, Se in e
TEL EGRAM S: “F RANCO BRIT-LE VALL OIS-P ERRET-F RANCE ”
TEL EPHON E: PE RIERE 60-2 4
TH E
SE C RET O F SU C CESS F UL
RU N NING .
Before a Rolls-Royce chassis is sold it is very
carefully teste d and adjusted by experts.
It will run best
if no attempt be made to unnecessarily interfere with
adjustments.
An owner would do well to instruct his driver as
follows:-
Lubricate effectively, in strict accor dance with the
advice given in this Handbook, and do not neglect any
part.
Inspect a ll parts regularly, but take care not to alter
any adjustments unless rea lly necessary.
CONTENTS
PAGE
SERVICE FACILITIES fOR ROLLS-ROYCE CARS ... ... ... 4
LEADING PARTICULARS OF CHASSIS ... ... ... ... 5
CHAPTER I.- STARTING THE ENGINE AND DRIVING THE CAR 7
Starting the Engine - Ignition Control-Throttle Control-Change-
over Switch for Fuel Pump- Fuel Gauge-Gear Changing-Controllable Shock Dampers-Lighting Control and Switch-Radiator
Shutters-Overheating-Fitting of Snow Chains.
CHAPTER II.- PERIODIC LUBRICATION AND ATTENTION ... 13
Lubricants Recommended-Capacities-Centralised Chassis Lubri-
cation System-Daily Maintenance-Every 2,000 miles-Tappet
Adjustment-Every 5,000 miles-Every 10,000 miles-Every
20,000 miles-Care of Wheels and Hubs-Replacement Tyres-
Balancing Road Wheels.
CHAPTER III.- FUEL SYSTEM ... ... ... ... ... ... 30
The Fuel System - Fuel Pumps - Petrol Filters - Action of the
Carburetter-Accelerator Pump-Economiser Jet-Strangler Con trol for Starting - Adjustment of Carburetter-Setting of Idling
Adjustment-Diagnosis of Faults-Float Feed Mechanism-”Hot
Spot”-Air Silencer and Cleaner.
CHAPTER VI.-ADJUSTMENT OF BRAKES ... ... ... ... 40
General-Adjustment of Foot Brakes-Adjustment of Hand Brakes
-Adjustment of Servo.
CHAPTER V.- THE CLUTCH ... ... ... ... ... ... ... 45
Adjustment of Clutch.
CHAPTER VI.- COOLANT SYSTEM ... ... ... ... ... 46
Coolant Pump-Radiator Shutters-CoolantLevel-Frost Pre-
Cautions-Fan.
CHAPTER VII.- ELECTRICAL SYSTEM ... ... ... ... ... 50
General-Battery-Battery Ignition-Sparking Plugs-Electrical
Fault Location
GUIDE TO MAIN SERVICE STATION ... ... ... ... ... 55
GIUDE TO CREWE SERVICE STATION ... ... ... ... ... 56
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