由于冷却系统产生大量水蒸气，使各管连接处的密封圈损坏，密封间隙过大而造成泄漏或吸水不足现象，应检查各管路的压力表是否正常； 检查缸盖内的液压油、冷却水是否有渗漏现象；检查各连接件的松紧度，如发现有松动现象，应及时拧紧。

柱塞泵使用中容易出现故障和问题的部位：一是进水管、油管和排气管；二是冷却风扇或进水管；三是泵体；四是进水管螺纹紧固；五是活塞杆接头当进水管处出现滴漏现象时证明冷却系统已损坏，此时应更换原管；若冷却水流量已不足，则应重新选择水泵并检查进水管、油管和排气管上是否存在漏水现象。

该现象可通过几个方面进行检查:1)缸盖内表面是否密封;2)机油是否有渗漏;3)空气压力是否正常;4)进气管是否有漏气现象;5)排气管和气缸套密封是否有渗漏现象;6)泵体内是否有大量残留液体故障排除:1)进水管有泄漏时应立即更换;2)排气阀关闭后要用压缩空气吹干;3)泵体内残留液体要及时处理;4)拆下柱塞泵并检查阀芯密封完好。

检查时必须注意泵体内不得有水分积聚;5)当吸水口出现漏水而使吸水不足时可更换;6)进水管螺纹无损坏应及时换掉维修方法:1)检查冷却箱或进水管阀门关闭方向是否正确;2)检测出水量是否过少（以不超过5L/min为宜）。

修理方法：更换活塞、进气道等配件 90R130-DD-5-NN-80-R-4-C8-H-GB-GBA-32-32-24 90R130DD5NN80R4C8HGBGBA323224 90-R-130-DD-5-NN-80-R-4-C8-H-GB-GBA-32-32-24 90R130DD5NN80R4C8HGBGBA323224 90R130-DD-5-NN-80-S-3-C8-F-GB-GBA-42-42-24 90R130DD5NN80S3C8FGBGBA424224 90-R-130-DD-5-NN-80-S-3-C8-F-GB-GBA-42-42-24 90R130DD5NN80S3C8FGBGBA424224 90R130-DD-5-NN-80-S-3-C8-H-GB-GBA-35-35-24 90R130DD5NN80S3C8HGBGBA353524 90-R-130-DD-5-NN-80-S-3-C8-H-GB-GBA-35-35-24 90R130DD5NN80S3C8HGBGBA353524 90R130-DD-5-NN-80-S-3-C8-H-GB-GBA-42-42-24 90R130DD5NN80S3C8HGBGBA424224 90-R-130-DD-5-NN-80-S-3-C8-H-GB-GBA-42-42-24 90R130DD5NN80S3C8HGBGBA424224 90R130-DD-5-NN-80-S-3-F1-F-GB-GBA-38-38-24 90R130DD5NN80S3F1FGBGBA383824 90-R-130-DD-5-NN-80-S-3-F1-F-GB-GBA-38-38-24 90R130DD5NN80S3F1FGBGBA383824 90R130-DD-5-NN-80-S-4-C8-F-GB-GBA-32-32-24 90R130DD5NN80S4C8FGBGBA323224 90-R-130-DD-5-NN-80-S-4-C8-F-GB-GBA-32-32-24 90R130DD5NN80S4C8FGBGBA323224 90R130-HF-1-BC-80-L-4-C8-H-03-GBA-26-26-24 90R130HF1BC80L4C8H03GBA262624 90-R-130-HF-1-BC-80-L-4-C8-H-03-GBA-26-26-24 90R130HF1BC80L4C8H03GBA262624 90R130-HF-1-BC-80-P-3-F1-H-03-GBA-35-35-24 90R130HF1BC80P3F1H03GBA353524 90R130-HF-1-BC-80-R-4-F1-H-00-GBA-32-32-24 90R130HF1BC80R4F1H00GBA323224 90-R-130-HF-1-BC-80-R-4-F1-H-00-GBA-32-32-24 90R130HF1BC80R4F1H00GBA323224 90R130-HF-1-BC-80-R-4-F1-H-04-GBA-35-35-24 90R130HF1BC80R4F1H04GBA353524 90-R-130-HF-1-BC-80-R-4-F1-H-04-GBA-35-35-24 90R130HF1BC80R4F1H04GBA353524 90R130-HF-1-BC-80-S-4-C8-F-03-GBA-29-29-20 90R130HF1BC80S4C8F03GBA292920 90-R-130-HF-1-BC-80-S-4-C8-F-03-GBA-29-29-20 90R130HF1BC80S4C8F03GBA292920 90R130-HF-1-BC-80-S-4-F1-H-03-GBA-17-17-24 90R130HF1BC80S4F1H03GBA171724 90-R-130-HF-1-BC-80-S-4-F1-H-03-GBA-17-17-24 90R130HF1BC80S4F1H03GBA171724 90R130-HF-1-CD-80-L-4-F1-H-03-GBA-29-29-24 90R130HF1CD80L4F1H03GBA292924 90-R-130-HF-1-CD-80-L-4-F1-H-03-GBA-29-29-24 90R130HF1CD80L4F1H03GBA292924 90R130-HF-1-CD-80-R-3-C8-F-03-GBA-32-32-26 90R130HF1CD80R3C8F03GBA323226 90-R-130-HF-1-CD-80-R-3-C8-F-03-GBA-32-32-26 90R130HF1CD80R3C8F03GBA323226 90R130-HF-1-CD-80-R-4-F1-H-00-GBA-32-32-24 90R130HF1CD80R4F1H00GBA323224 90-R-130-HF-1-CD-80-R-4-F1-H-00-GBA-32-32-24 90R130HF1CD80R4F1H00GBA323224 90-R-130-HF-1-CD-80-S-4-F1-F-03-GBA-20-20-20 90R130HF1CD80S4F1F03GBA202020。