The 708-1S prefix covers several different pumps on several different machines, and that is exactly how ordering mistakes happen. On a three tonne mini excavator this item is the main pump. On a D61 or D65 dozer, a number in the same prefix group is the fan pump. Same family code, different circuit, different machine class.<\/p>\n
Komatsu PC27MR-2 and PC30MR-2 mini excavators, listed in parts data as the hydraulic main pump for that machine family. Komatsu’s online catalogue does not return a citable page for this number, so the item name is trade-established rather than manufacturer-confirmed, and no displacement, pressure or flow figure is published for it here.<\/p>\n
A rental fleet mini excavator runs a duty cycle that is unusually punishing for its size: hundreds of short start-stop cycles a day, hydraulic oil that spends long periods at high temperature because the machine is idling more than it is digging, and filters that get changed less often than they should because the service interval is measured in machine hours that never accumulate evenly. The pump absorbs all three.<\/p>\n
The failure pattern is predictable: swing and boom speed fade first, the machine takes longer to fill a bucket, and oil temperature climbs because bypassed flow is doing no work. Before condemning a pump on a PC27 or PC30, check the pilot pressure and the relief settings, because a stuck relief valve on these machines produces a very similar symptom.<\/p>\n
The method is in our gu\u00eda del comprador de bombas y especificaciones<\/a> y art\u00edculo de diagn\u00f3stico y ajuste del regulador<\/a>.<\/p>\n Match shaft spline, pilot, flange, port positions and control orientation against the removed pump. Prime with clean oil before cranking, change the return filter element, keep the case drain unrestricted to tank, and target ISO 4406 18\/16\/13. Minimum order one piece. Three to six month warranty on new aftermarket units as stated on your proforma invoice; bench checked and photographed before the wooden case closes, delivery 5 to 8 working days from payment subject to stock. The dozer fan pump in the same prefix group is 708-1S-00241<\/a>, y la gama se encuentra bajo Bomba hidr\u00e1ulica Komatsu<\/a>.<\/p>","protected":false},"excerpt":{"rendered":" Pieza:<\/strong> 708-1S-00270 main hydraulic pump for the Komatsu PC27MR-2 and PC30MR-2 mini excavators. It is the machine’s implement pump, not a fan pump.<\/p>\n Why this one gets mis-ordered:<\/strong> it carries the 708-1S prefix that also appears on dozer fan pumps, so buyers search it into the wrong category.<\/p>\n Suministrada como:<\/strong> reemplazo nuevo de marca HTD, fabricado en China. MOQ 1 pieza, caja de madera, despacho de 5 a 8 d\u00edas h\u00e1biles.<\/p>","protected":false},"featured_media":4651,"template":"","meta":[],"product_brand":[],"product_cat":[71,46],"product_tag":[826,827,702,829,828],"class_list":["post-4694","product","type-product","status-publish","has-post-thumbnail","product_cat-komatsu-hydraulic-pump","product_cat-excavator-hydraulic-pump","product_tag-708-1s-00270","product_tag-komatsu-pc27mr-2","product_tag-main-pump","product_tag-mini-excavator","product_tag-pc30mr-2","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/product\/4694","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/media\/4651"}],"wp:attachment":[{"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/media?parent=4694"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/product_brand?post=4694"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/product_cat?post=4694"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/es\/wp-json\/wp\/v2\/product_tag?post=4694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Montaje y pedido<\/h2>\n