Fault Phenomenon: SANY SAP90C paver lubrication pump works normally, but some lubrication points have no grease.

Troubleshooting Process:
– Checked distributor valve: single-line distributor spool stuck.
– Checked lines: lines kinked or ruptured.
– Checked grease fittings: fittings clogged.
– Checked grease: incorrect grease type or solidified.

Root Cause: The single-line distributor valve leading to a critical lubrication point is stuck due to hardened grease or debris, preventing grease delivery.

Required Parts: Replace lubrication distributor valve and clean lines.