cpenn Report post Posted September 15, 2015 Coolant leaks at rear of engine (not under radiator) at a small drip only when engine is not running...Cummins ISC 330. Share this post Link to post Share on other sites
wolfe10 Report post Posted September 15, 2015 Rear of engine (which is toward the front of the coach)? Or front of engine (toward rear of coach)? And, is it on the centerline (left to right) or off center? Share this post Link to post Share on other sites
cpenn Report post Posted September 15, 2015 Front of engine (rear of coach) & off center (looking from the back of the coach just a little to the left of center) Share this post Link to post Share on other sites
huffypuff Report post Posted September 15, 2015 Sounds like water pump on a Cummins. Easy to change once you have access to it. Get two five gallon buckets and drain coolant. Remove rock shield guards and grates from underneath. Remove belt with breaker bar on tensioner. Remove three bolts holding water pump to block. Remove water pump with o-ring seal. Reverse procedure to install, now will be a good time to put in fresh antifreeze and replace belt. Share this post Link to post Share on other sites
