WAG-12 Main Compressor Oil Level Check

13 Sep 2026

🚆 WAG-12 Locomotive

Sight Glass Oil Level Verification

⚠️ Important
If the oil level is not between MIN & MAX, inform Helpline immediately.

Oil Level Verification Procedure

1

Check Sight Glass

Check the oil level of the main compressors using the sight glass provided at MASU.

2

Run Compressor — 5 Minutes

Run the compressor for 5 minutes by either method:

Method 1
Drain MR below 8 kg/cm² using AR drain cock A11/1.
Method 2
Force the compressor using the BLCP forcing switch on the Driver's desk.
3

Wait — 5 Minutes

Once the compressor stops, wait for 5 minutes before checking.

4

Check Oil Level

Check the oil level in the sight glass.

5

Compare MIN & MAX

Compare the observed level with the MIN and MAX markings.

6

Inform Helpline

If the observed level is outside the MIN–MAX range, inform Helpline immediately.

Oil Level Verdict

Observed Level Verdict
Below MIN LOW
Between MIN & MAX OK
Outside MIN–MAX INFORM
🚨 Safety Reminder
Oil level outside the MIN–MAX range = Inform Helpline without delay.

⚡ Quick Reference

MASU Sight Glass → Compressor 5 min → Wait 5 min → Read Level → Below MIN = LOW → MIN–MAX = OK → Outside = Inform

Compressor: MR below 8 kg/cm² via A11/1, or force using BLCP.

LP Diary • WAG-12 Working Reference