take it to a shop
You can replace the thermostat on a C 15 Caterpillar diesel engine by removing the water hose. Next, remove the thermostat housing bolts. Reverse the process to install the new thermostat.
on the passenger side, towards the front. Just follow the cooloat lines from your reservoir and one will lead you to it.
3406 C15 3208 3306
The solenoid on a Caterpillar C15 diesel engine can be found on top of the alternator. The solenoid is held on by four screws.
Caterpillar C15--2050 lb/ft of torque.
1R-1808 caterpillar oil filter
14.6 liter inline six diesel engine produced by Caterpillar. Used for on-highway, off-highway, power generation, and marine applications.
A C15 Caterpillar engine has dozens of torque specifications for many different engine bolts. The head bolts should be torqued at 350 pounds.
The Caterpillar C15 diesel engine torque specifications for the rod bearings is 35 pounds. The main bearing torque specifications is 350 pounds.
You need to specify which model Caterpillar motor you have. 455 is just a horsepower rating - several models were available with a 455 horsepower rating, to include the 3406B, 3406E, C12, C13, and C15.
It sounds like a fuel problem. Check your fuel filter/water separator (sometimes there are more than one filter), and replace if clogged, or if you don't know the last time it/they were replaced.
The block heater, on your 2001 C 15 Caterpillar diesel engine, can be removed by loosening the retaining nut. The block heater will easily come out. Reverse the process to install the new heater.