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).
Fitting instructions for a Smith Radiator Thermometer and associated gauges.
| Identifier | ExFiles\Box 156\1\ scan0032 | |
| Date | 17th February 1933 guessed | |
| WHEN a Smith Radiator Thermometer is combined with the Smith ‘R.P.’ Thermostat, the motorist is perfectly equipped so far as temperature control is concerned. The Thermometer Bulb fits into the Thermostat body and the dial indicates the heat in the cylinder block enabling the owner to set the Thermostat to give precisely the temperature for maximum power and economy. The dual type of instrument, i.e., Car-Thermo Safety Gauge, enables the fitting of a Thermometer without cutting another opening in the instrument panel and, therefore, without destroying the balance of the panel. This combined Thermometer and oil gauge fits the opening previously occupied by the oil gauge. These Thermometers can be used for recording oil temperature if required by connecting to the sump. FITTING INSTRUCTIONS WE WOULD POINT OUT THAT IN HANDLING THESE INSTRUMENTS, ESPECIALLY BEFORE FITTING, THE TUBING SHOULD BE CAREFULLY DEALT WITH. SHARP BENDS MUST NOT BE APPLIED TO THE TUBING AND IT MUST NOT BE GRIPPED BY SHARP TOOLS OR MIS-HANDLED IN ANY WAY. ON NO ACCOUNT MUST THE TUBING BE DISCONNECTED FROM THE BULB OR GAUGE. HOSE FITTING CONNECTION. 1. Cut opening in instrument board to suit the diameter of the instrument if it is a flush fitting type, and if it is a non-flush type cut a hole sufficiently large to pass the bulb and connections. 2. If necessary, cut a 1 in. hole in the bulkhead to pass bulb and capillary tube. 3. Drain the water level in the engine and radiator until there is no water contained in the outlet water hose. 4. Having selected a position for insertion of bulb in hose pipe, take the small tool supplied in the package and rotate, applying pressure until same has pierced a hole through the water hose. 5. The bulb should be inserted in the hose pipe at the nearest possible point to engine. 6. Pass bulb and capillary tubing through openings and fix instrument to instrument panel or dashboard. 7. Lead capillary tubing along bulkhead stay to the required position. Tubing can be fixed to the bulkhead stay or to any other convenient point by clips or adhesive tape. 8. The bulb should then be pushed through the hole made in the hose until the shoulder of the rubber plug is reached. Care must be taken that the strain of pushing the bulb through the hose is taken by the heavy thread of the bulb and not by the capillary tubing itself. FITTING TO THE R.P. ADJUSTABLE THERMOSTAT. The above applies to the Thermostat fitting with the exception of instructions 4, 5 and 8. In place of No. 4, the hexagon nut of the ‘R.P.’ is unscrewed and the lead washer and tube of Thermometer is inserted. The nut is then tightened. The same instructions apply to point 8, in that care must be taken in pushing the bulb into the Thermostat by the heavy thread of the bulb and not by the actual tubing. TANK FITTING OR METAL CONNECTION Follow previous fitting instruction except Nos. 3, 4, 5 and 8. Partly drain radiator and cut opening in wall and fix double screwed union P.7059, supplied with each bulb. If radiator wall is thin, fix the union by soldering. The bulb can alternatively be fitted to the metal part of the header pipe or to the cylinder block, in which case the metal must be tapped 1/8” gas. If there is insufficient room for the length of the bulb, we can supply a longer double-ended union under our code No. P.9438. SPECIAL NOTE.—Avoid all sharp bends in capillary tube. See there is no point at which tube may chafe. Between any two points the capillary tube must not be under tension. If there is surplus tubing it should be formed into a neat flat spiral and supported to some convenient point. Capillary tube should be kept clear of exhaust pipe, manifold or any other part of the engine which heats when running. THERMOSTAT CONNECTION HOSE FITTING CONNECTION TANK-FITTING CONNECTION When tightening nut “A” apply a spanner to flats “B” to prevent twisting of the tubing. METHOD OF CARRYING TUBING TO DASHBOARD. TUBE MAY BE CLIPPED UP IN ANY SUITABLE PLACE 1 in. dia. hole drilled in bulkhead to admit bulb, etc. Surplus tube arranged to lie in flat coils close up and secured to bulkhead. Make sure hole, if made here, clears end of cylinder casting - These Instruments are covered by our usual guarantee against faulty material or workmanship. | ||