|
| Author |
Message |
    
Patrick Heavey
New member
Username: relayguy
Post Number: 1
Registered: 05-2008
| | Posted on Friday, May 23, 2008 - 01:13 pm: | 
|
my surveyor says i have the "old" style water pump drive shaft. She recommends I replace it with a "compact water pump" that doesn’t use a drive shaft. Q: Is that good advice, and where can I get such a thing? |
Fred Frog
Member
Username: lilypad
Post Number: 21
Registered: 01-2008
| | Posted on Friday, May 23, 2008 - 02:59 pm: |
|
The Lehmans originally came with what you see on your engine. There is a weak spot in the system which is the screwdriver like connection between the driven gear that goes into the engine and the pump part which is aft and has the hoses connected to it. The "screwdriver" side will eventually break off and stop driving the pump. This leads to almost instant overheating due to loss of seawater coolant to the heat exchanger. Lehmans are very sensitive to overheating which is an expensive complication.
There is a replacement pump available which does away with the old style connection and problem. The new style comes in two sizes the 3/4" or the 1". The 3/4" moves as much water as the original pump did. The 1" moves more, which results in some extra cooling capacity, possibly good for your transmission and/or oil coolers.
Replacement parts for the old style drive system are getting hard to come by, old stock is all that is available IF you can find it. Bob Smith at American Diesel is often listed as a good source. He was VP of Lehman's marinization project when the engines were first converted for marine use. (American Diesel Corp
PO Box 1838 (Rt. #3 North)
Kilmarnock, Va. 22482
Phone: 804.435.3107 Fax: 804.435.6420 )Other distributors are certainly able to provide the same parts.
I would recommend that you either carry the new style pump as a spare for when yours goes bad, or better yet, buy and install the new pump and keep the old one and its associated pieces as your spare. By installing the new pump you insure that it fits, works, and that you have all the right hoses and fittings. The old one onboard as a spare insures you against some unforseen occurance like sucking a bunch of sand into the pump which scores the backing plate too much to pump water.
I think your surveyors advice is sound.
K |
|
|
|
Product Categories |
| Engine Parts · By Brand |
| Engine Manuals · By Brand |
| Books |
| General Repair and Maint. |
| Care and Repair |
| · Adhesive and Sealants |
| · Bottom Cleaners |
| · Cleaners Wax and Polish |
| · Mops Brushes and Sponges |
| Covers and Tops |
| · Bimini Tops · Hardware |
| · Cover Accessories |
| · Motor Covers |
| · Universal Boat Covers |
| Electronics |
| · Gauges and Compasses |
| · Mounts and Accessories |
| Electrical |
| · Batteries & Chargers |
| · Battery Accessories |
| · Dockside Electrical |
| · Electrical Terminals |
| · Electrical Wire, Cable |
| · Fuses, Fuse Holders |
| · Switches |
| · Wire Ties, Clips, Tape |
| Fuel Systems |
| · Fuel Tanks |
| · Fittings, Fills, Vents |
| · Hose & Primer Bulbs |
| · Filters, Senders, Caps |
| Hardware |
| · Deck Cabin Hardware |
| · Molding and Rub Rails |
| · Rails and Fittings |
| · Snaps Shackles and Hooks |
| · Windshield Hardware |
| Lighting |
| · Cabin Lights · Light Bulbs |
| · Navigation Light Parts |
| · Navigation Lights |
| · Spotlights · Parts |
| Mooring and Dock |
| · Boat Fenders · Boat Hooks |
| · Buoys and Markers |
| · Deck Cleats · Dock Edging |
| · Dock Parts and De-Icers |
| · Fender Covers and Holders |
| · Keelshield / Toon-Tectors |
| · Ladders and Platforms |
| Prop / Trim /
Transom |
| · Jack Plates, Wedges |
| · Mounting Brackets |
| · Outboard Stands |
| · Trim Tabs, Stablizers |
| · Prop Nuts, Locks, Pins |
| · Propellers · Wrenches |
| Pumps |
| · Aerator Pumps |
| · Bilge Pumps |
| · Drain Plugs and Tubes |
| · Hose · Through Hull Fittings |
| Rope and Cordage |
| · Anchor Line · Dock Line |
| · Fender Line · Bulk Rope |
| · Shock Cord and Bungee |
| Safety Products |
| · Horns Bells and Whistles |
| · Mirrors |
| · Vents Blowers and Hose |
| Sanitation |
| · Fresh Water Pumps |
| · Marine Toilets |
| · Sanitation Chemicals |
| · Sanitation Pumps/Hose |
| · Water/Waste System Parts |
| Seating |
| · Deck Chairs and Tables |
| · Fishing Seats |
| · Lounge Seats |
| · Pontoon Furniture |
| · Seat Bases and Pedestals |
| Steering / Control |
| · Control
Boxes |
| · Control
Cables |
| · Hydraulic
Steering |
| · Mechanical
Steering |
| · Rigging · Steering
Wheels |
| Tools / Shop Supplies |
| · Lubricants & Additives |
| · Motor Flushers |
| · Tools & Test Equipment |
| Trailering |
| · Boat Guides/Motor Support |
| · Hitches Balls Couplers |
| · Rollers Brackets Springs |
| · Tires Wheels and Carriers |
| · Trailer Hubs & Bearings |
| · Trailer Jacks |
| · Trailer Wiring and Lighting |
| · Winches Straps Tie Downs |
| Manufacturer List |
|
