I've got a canal narrow boat fitted with a Lister SR2 engine and LH150 gearbox. When we bought the boat last year it hadn't moved for about four years, and the gearbox had water intrusion ( possibly through the dipstick which sits low in the bilge. ) and the gearbox was stuck in 'forward', with no neutral or reverse. Lister Lh 150 Gearbox Manual - Download Free Apps. Lister Lh 150 Manual 2015 hyundai workshop manual. Dragstar 1100 owners manual lister lh 150 gearbox. Lister Lh 150 Gearbox Manual Bmw. Comes equipped with an automatic transmission, Nardi steering wheel, power windows, power steering, air conditioning. I flushed the gearbox and changed the oil, and eventually called in a local marine mechanic, who sorted the problem. We had a few days out on the boat in May / June, and now the problem has returned ( no neutral or reverse ) - I've topped the lubricant levels correctly and set the 'Ahead Adjustment' screw in the gearbox to the recommended spacing, has anyone out there any advice before I phone the mechanic ($$$) again? *note - this is a hydraulic gearbox, and works using pressure. I've got a canal narrow boat fitted with a Lister SR2 engine and LH150 gearbox. When we bought the boat last year it hadn't moved for about four years, and the gearbox had water intrusion ( possibly through the dipstick which sits low in the bilge. ) and the gearbox was stuck in 'forward', with no neutral or reverse. I flushed the gearbox and changed the oil, and eventually called in a local marine mechanic, who sorted the problem. We had a few days out on the boat in May / June, and now the problem has returned ( no neutral or reverse ) - I've topped the lubricant levels correctly and set the 'Ahead Adjustment' screw in the gearbox to the recommended spacing, has anyone out there any advice before I phone the mechanic ($$$) again? *note - this is a hydraulic gearbox, and works using pressure. NO OIL PRESSURE! Now faced with having to take the gearbox out and checking the pump etc. And pos send it away to get reconned $$$ (sic) oh well bang goes the summer! Helping out a friend who has a LISTER SR2 in his boat. The AHEAD function of the gearbox works well,but reverse will not engage until a lot of throttle is applied. Have down loaded adjustment instructions,looks like the brakeband may need adjusting? Nipping up the brakeband is simple enough so will try it and see if the problem disappears. Question is,is the hydraulic system on these gearboxes bullet-proof,is it best to check that side of it out as well? I have rebuilt dozens of marine reversing gear units,but never a lister version. Have you checked the dipstick in the reversing box. Being short of oil would produce the symptoms you describe Spent some time on this gearbox today. Brake band adjustment is correct,nipped down and 3 full turns back. Ahead adjustment correct. Drained the oil and refilled with EP 80/90. The reverse function engages sweetly sometimes,on some occassions it fails to engage without lots of revs and a few seconds delay. A kind and knowledgable chap who repairs and restores listers suggested altering the hydraulic pressure by shim adjustment. Looks like the problem may be more complex than it first appeared to be. Any one have any more tips? Princess in disguise jonaxx. Spent some time on this gearbox today. Brake band adjustment is correct,nipped down and 3 full turns back. Ahead adjustment correct. Drained the oil and refilled with EP 80/90. The reverse function engages sweetly sometimes,on some occassions it fails to engage without lots of revs and a few seconds delay. A kind and knowledgable chap who repairs and restores listers suggested altering the hydraulic pressure by shim adjustment. Looks like the problem may be more complex than it first appeared to be. Any one have any more tips? The hydraulic pressure is adjusted by adding or deducting shims from behind the relief valve spring which is situated behind the forward and reverse lever unit on the port side of the box. Adjustments to this should be done with a pressure gauge screwed into the plug port on the boxes top plate,but for the small increase in pressure that you need just a calculated guess would surfice.Probably a weak relief valve spring,but add shims to increase pressure.There are O ring seals on the F&R lever unit behind which the relief valve,spring and shims are so go gently. The hydraulic pressure is adjusted by adding or deducting shims from behind the relief valve spring which is situated behind the forward and reverse lever unit on the port side of the box. Adjustments to this should be done with a pressure gauge screwed into the plug port on the boxes top plate,but for the small increase in pressure that you need just a calculated guess would surfice.Probably a weak relief valve spring,but add shims to increase pressure.There are O ring seals on the F&R lever unit behind which the relief valve,spring and shims are so go gently. Many thanks bizzard the suggestion i got was that the shims had possibly been increased already to increase the pressure for the ahead gear to release. The astern function is actuated by the 'blow-by' from the pressure control valve,if there is insufficient flow as a result of the release valve being set to high,astern wont engage? If the pressure is set too low,the ahead will be unable to disengage? So,could it be that the pressure is too high? Many thanks bizzard the suggestion i got was that the shims had possibly been increased already to increase the pressure for the ahead gear to release.
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