T.E.MANNING
Schoener 50
1771 ED Wieringerwerf
The Netherlands
Tel/fax 0031-227-604128
Homepage: http://www.flowman.nl
E-mail:pumps@flowman.nl
FLOWMAN
ADVANCED PUMP TECHNOLOGIES
Edition 03: 08 March, 2002
SOLAR SPRING SOLAR PUMPS
MAINTENANCE
Replacement of the cam shaft
Tools required : Allen key size 8mm (6MA) mallet (plastic or wood); (optional) a vice. MAKE SURE THE ALLEN KEY IS OF THE HIGHEST QUALITY- IT MUST FIT PERFECTLY IN THE SCREW SOCKET OTHERWISE YOU WILL HAVE DIFFICULTY LOOSENING THE SCREWS AND RISK DAMAGING THEM. IF IN DOUBT, ORDER THE NECESSARY ALLEN KEYS.
BEFORE YOU START
Solar Spring pumps with 3mm cams are usually sold with an inertia amplifier. Elastic element (part 319) and ovoid centerer (part320) have been removed.
When replacing a 3mm cam with a cam of different size, MAKE SURE YOU PUT AN ELASTIC ELEMENT GROUP INSIDE THE ELEMENT CHAMBER (316)
When replacing a cam of different size with a 3mm cam AND you intend to make use of an inertia amplifier, MAKE SURE YOU REMOVE THE ELASTIC ELEMENT GROUP FROM ELEMENT THE CHAMBER (316)
Step one:
REFER to comments on
opening pump IN RELATION TO OIL IN THE PUMP BODY SYSTEM AND DECIDE HOW BEST TO DRAIN OIL FROM THE PUMP SHOULD REMOVAL OF OIL BE NECESSARY
Step two
To release the pump body and camshaft assembly from the motor (343), undo the four screws (342) using an Allen key. Gently ease the pump body group (363 etc) off the cam shaft (338).The camshaft asembly is then fully accessible projecting from the top of the motor,
Step three
Use the Allen key to loosen the lower grub screw (341) in the cam connector (340) nearest the motor (343). Remove the cam connector (340) with the cam shaft (338) inside. The motor shaft usually fits tightly inside the cam connector (340).
Step four
Use the Allen key to loosen the upper grub screw (341) in the cam connector (340). The cam shaft (338) usually fits very tightly inside the cam connector (340).
Step five
Place the cam connector (340) in a vice with the cam shaft (338) pointing down, and use a small wooden mallet with a blunt instrument (or eventually, a screwdriver) to tap the cam shaft out of the cam connector. It does not matter if the small connector key (339) comes out with the camshaft.
Note : The cam-shaft (338) may need substituting on installation for optimisation purposes or, after many years' use, on account of wear and tear. It needs replacing if there are signed of an uneven or worn surface on its central oval section where it is in contact with the vertical bearings (347)
IMPORTANT WARNING Never use a metal hammer on the cam shaft (338) and use the least force necessary to drive the cam shaft as gently as possible into position. The cam shaft (338) is made from specially hardened steel and is brittle. Excess force and/or use a metal hammer may lead to damage to or cracking of the new cam shaft. The manufacturer will not answer for any failure to use the maximum care in the fitting of the cam shaft.
Step six
Gently tap the cam connector (340) back on to the motor (343) shaft as shown in figure ******* and tighten the lower grub screw (341).
Step seven
Make sure the connector key (339) and the connector key slots of the moto and the new cam shaft are aligned. If the connector key (339) came out when the original camshaft was removed, remember to insert it in the key slot on the replacement camshaft (or else in the motor shaft key slot inside the cam conmnector (340) before putting the replacement cam shaft (338) into the cam connector (340).
(Drawing from photo 31-0152)
Step eight
Using a wooden mallet, tap the replacement camshaft (338) home until it rests against the top of the motor shaft. A change in the tapping sound should be heard when the new camshaft has reached its correct "home" position.
(Drawing from photo 31-0152
Step nine
Re-tighten the upper camshaft grub-screw (341).
Note : REVIEW THE WARNING NOTE UNDER STEP ONE ABOVE !
RETURN TO LIST OF CONTENTS: Solar Spring Maintenance manual.
RETURN TO SELF DIAGNOSTICS for Maintenance purpose
RETURN TO KEY WORDS: Solar Spring Maintenance manual.
RETURN TO DRAWING: Drawing for maintenance purposes.
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