Lister HRW Parts Availability:
Routine Service Items
-- 100% availability. If ordering, please note the following first:
Just one type -- as easy as it gets, but please specify if four or six cylinder as they use a larger element.
If you have the turbocha\rged version, don't forget the oil feed to the turbo has its own, different filter.
Just one pattern of fuel filter used on the HRW range.
Metal body filter element, sandwiched between a filter head and lower bowl section, secured by a single central bolt from the top.
There are several different air filter sizes used on the HRW series, divided between the 'pancake' type filter element
and cylindrical elements.
If you can see a part number on the existing element, that will do fine. If not, for pancake types please advise outside diameter,
inside diameter and height (of the element, not the housing).
For cylindrical types, diameter and length, plus inside diameter at each end of the element.
Some heavy duty applications may have an inner and outer cylindrical element. Oil bath filters were widely fitted and providing
they are not rusty or shedding fragments may be cleaned and re-used.
Marine application units may not have an air filter at all.
--- Good, but varying availability.
Alternator / Dynamo
Older HRW models were fitted with a dynamo charging system, which then gave way to an alternator. We are able to supply replacement dynamo
system parts, but given the expense and relative unreliability and low output it really is worth thinking about converting to
an alternator system. Differing patterns of alternators were used over time and a photo is helpful if you want a replacement.
Please specify 12 volt or 24 volt. Marine units may be insulated return; if this is important to your application, please mention it when enquiring.
If you are unable to see any numbers on the existing belt, please advise inside length of the belt and the width of the belt.
We have seen numerous different pulleys fitted to HRW series and it is important to ensure the belt does not ground out in the bottom of the groove.
Water Pump, Lister, belt driven
Generally significantly scarce and expensive. If at all possible
send one or two good photos as there are several variants. If you can't do any photos, then note any numbers cast on the pump body.
We sometimes have exchange units ready to go, but otherwise, providing it is not unduly corroded we are usually able to rebuild your existing pump.
Water Pump, Gear Driven, marine applications.
Expensive but available. Rebuild kits readily available.
Numerous patterns of coupling have been used and generally supply is not a problem. A photo is handy if you are not
sure what type you have.
Relatively expensive but available. The only problem unit is the 24 volt motor for clockwise rotation engines; this is quite scarce.
In all cases expect a substantial surcharge if you don't have an exchange unit to return. If you are looking at getting your motor repaired
locally, be sure to give the repairer the full set of numbers off the motor case; many starter motor repairers won't work on these units.
Marine units may be insulated return; if this is important to your application, please mention it when enquiring.
Solenoid and protection devices.
Over time there have been a large variety of sensors, switches and other equipment
used on the HRW series. Some may still be available, some will not. Please check for any numbers you can find on existing iterms
and preferably supply a photo.
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Brand new injectors are becoming thinner on the ground but injector rebuild items are not a problem.
Fuel Injection Pumps
No supply issues. If you're not sure what you are doing
with these pumps, the job is best left to a person with suitable experience, as removal and refitting inevitably involves checking
both the injection timing and balance between pumps. (2 and 3 cylinder models)
Four and six cylinder versions use an externally mounted pump assembly; there are two in line types (by manufacturer) and a DPA type.
Although there are only three basic pumps, there are numerous variants of those pumps so if ordering it is worth making a note of all
the numbers on the pump ID plate. If the specific variant is not available there is usually little problem in having your own unit rebuilt.
Fuel Lift Pump
Readily available. Specify how many cylinders when ordering.
(4 and 6 cyl.) Becoming scarce and expensive if available. If you have issues with your existing unit we are happy to
look at refurbishing it, or supply appropriate
Raised Hand Start
Limited availability of sprocket assemblies but repair parts available. Chain; readily available.
As with most older water cooled Listers, exhaust and water rail manifolds are significantly scarce, or significantly expensive if
you find one. We are able to have manifolds made to pattern in stainless if you are really stuck.
Generally, straight hoses are not an issue as they may be cut to length from standard hose. Hoses with tightly moulded bends
may be more problematic. For radiator cooled versions, a photo and hose measurements are a good idea.
Gaskets and Joints
100% availabilty; sets or individually.
Mixed availability. Internal items common with the much more numerous air cooled versions are not generally a
problem. Items peculiar to the HRW and specifcally cylinders, cylinder heads and associated water bearing parts are generally
significantly scarce and expensive. As always with water cooled units it is corrosion that takes its toll, making good used pieces
equally scarce and expensive. If you are looking at an HRW for a new project, corrosion investigation should be right up there
among the things to check for. Items peculiar to four and six cylinder versions may be more problematic; fortunately, pistons
and bearings are common actoss the range, with the exception of turbo version pistons. Best advice is to ask before starting work
on a four or six cylinder.
New engines long unobtainable. We sometimes have core units and may be able to offer a rebuilt exchange
engine to meet your specification. Alternatively, we may be able to rebuild your existing unit but only subject to an inspection
to check if there are significant corrosion issues.
Top Tip !
If you have a marine HRW, periodically check the condition of the impeller in the raw water pump. It can become hard and brittle,
either breaking up slowly and ceasing to pump effectively, or if a complete lobe breaks off it can completely stop the coolant flow.
Second -- (2 and 3 cylinder versions) if the oil level rises slowly and / or the oil smells of fuel, this is always a sign of fuel finding its way into the sump.
Typically this will be coming from the fuel pumps and is a sign it is time to have them overhauled. Less often, it may be due to a leaking internal pipe
or defective lift pump. Whatever the reason, don't ignore it as it will only get worse and oil thinned with fuel just
isn't going to do its job properly. In extreme cases there is a theoretical possibility of the engine running away on fuel vapour from the sump.
Finally -- if working on four and six cylinder versions on the bench, take care not to knock or damage the sump.
They distort relatively easily, are scarce and may give you a significant leak issue on reassembly. The weight of the engine should not be rested on the sump.