Caterpillar 324D, 325D, 326D, 329D & 329D MHPU Mobile Hydraulic Power Unit Factory Service & Shop Manual Price listed in US Dollar: $39.99 Leave this field blank Complete workshop & service manual with electrical wiring diagrams for Caterpillar 324D, 325D, 326D, 329D & 329D MHPU Mobile Hydraulic Power Unit. Read more about Caterpillar 324D, 325D, 326D, 329D & 329D MHPU Mobile Hydraulic Power Unit Factory Service & Shop Manual