个人资料
正文

SDS hammer drill

(2019-11-09 21:41:42) 下一个

SDS/SDS plus钻头兼容约3/8",SDS max约3/4",都是Bosch发明的冲击锤钻。我有Bosch SDS plus(11224VSR,开关可选锤-锤击钻-钻), SDS max(11240,开关可选锤击或锤击钻)各一把,后者几年前偶尔没有hammer,今天加ground rod driver时发现完全没有hammer。Youtube找到一文:I have a Bosch 11241EVS and it would not hammer, after not much use for years. Sprayed starting fluid and WD-40 in the chuck several times, finally put it on hammer only  and put the hammer bit on and kept tapping the bit  on a block of cement  as I pulled the trigger. I think the cylinder was stuck.  works great now, this has happen at least 3 times to me over 15 years。就是说活塞卡住,要往卡头里加starting fluid和WD40,再加上锤头在混凝土块上试验复活,过去15年此故障至少发生过3次。

实际试验有效。开始用start fulid几次无效,后来加WD40还是无效,再加一次且搁置2小时后hammer正常。此前地线铜棍太靠近地基不行,这次错开2尺,ground rod先套卡子再加4吋1/2PVC用胶带缠住,否则ground rod drive内径太大。

 

[ 打印 ]
阅读 ()评论 (0)
评论
目前还没有任何评论
登录后才可评论.