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Main Component Assembly
from Briggs & Stratton Pressure Washer Familiarization & Troubleshooting Guide Manual - PDF DOWNLOAD
Portable Pressure Washer Familiarization and Troubleshooting Guide Section 6 • Medium Frame Pump
Main Component Assembly Before installing the pump onto the engine, place the engine with its shaft in a vertical position and facing the installer. Make sure the engine adapter has been properly installed to the engine. Also check that the axial cam drive components are installed properly. The pump may now be installed as follows: 1. Install a new o-ring seal around the mounting flange of the pump crankcase. 2. To aid reassembly, apply a dab of petroleum jelly to the piston pivot shoes, in the area indicated by item 1 in
Figure 6.35.
Figure 6.35 — Piston Pivot Shoes Figure 6.36 — “Jacking” Bolt Locations
3. Place the piston pivot shoes onto the tips of the three pistons. The grease should hold the shoes in place. 4. Insert two (2) M6-1.0 x 45mm hex head bolts through mounting holes in the pump crankcase, 180° apart, and at the locations shown in Figure 6.36. These are the two long “jacking” screws. 5. Lower the pump toward the engine adapter. Align the crankcase and engine adapter mounting holes and also position the three piston pivot shoes so that they engage the axial cam bearing race properly. 6. When you are sure the pump crankcase and piston pivot shoes are properly aligned and positioned, thread the two long hex head bolts into the engine adapter mounting holes. 7. Visually verify that the piston shoes remain properly seated on the bearing race as you tighten the two screws alternately. 8. When the two jacking bolts are tight, install four (4) M61.0 socket head cap screws through the mounting holes of the pump crankcase. Thread them into the mounting holes of the engine adapter until they are snug. 9.Remove the two (2) “jacking” hex head bolts and replace them with the two (2) remaining M6-1.0 socket head cap screws. 10. When all six (6) socket head cap screws are snugged down, tighten them to the torque value specified in the
Torque Chart, found on Figure 6.2 (Exploded View) at the beginning of this chapter.
