Caterpillar Operators Manual | Format: Enhanced Reproduction (Written by Manufacturer) | Pages: 94 | Fits: D5 Crawler (SN# 37J1 and Up | 51H1 and Up | 81H1 and Up | 82H1 and Up) (Direct Drive ) Content: Critical every day use and preventative maintenance information for your Caterpillar Crawler (CT-O-D5 37J1+). In general, Operators Manuals usually contain lubrication, capacities, minor adjustment procedures, and other important usage information. Every Caterpillar owner should have the operators manual.